20401253 - Physics of Liquids

To offer an introduction to the modern physics of liquids, understood as the study of the phenomenology of fluids starting from interatomic force laws. We will study the theoretical methods based on integral equations that allow us to describe the structure of the liquid. Computer numerical simulation methods applied to the physics of liquids will be introduced. Then we will study the correlation functions and the theory of linear response with applications to the study of the dynamics of liquids in the hydrodynamic limit and in the visco-elastic limit. The memory functions will be introduced. The physics of supercooled liquids and the study of the glass transition will be discussed

Curriculum

teacher profile | teaching materials

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.

teacher profile | teaching materials

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.

teacher profile | teaching materials

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.

teacher profile | teaching materials

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.

teacher profile | teaching materials

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.

teacher profile | teaching materials

Mutuazione: 20401253 FISICA DEI LIQUIDI in Fisica LM-17 ROVERE MAURO

Programme

1 - Thermodynamics and Statistical Mechanics.


Extensive and intensive thermodynamic functions. Balance conditions. Legendre transforms and thermodynamic potentials. Phase stability conditions. Phase transitions and their classification. Van der Waals equation. Introduction to the theory of statistical ensembles. Fluctuations.


2 - Forces between atoms and short-range order in liquids.


Characterization of the liquid state of matter. Forces between atoms and effective potentials. Distribution functions in the canon and in the grand canon. Radial distribution function and relationship with thermodynamics. The static structure factor. Measurement of the structure of a liquid with diffusion techniques. Hierarchical equation for distribution functions. Medium strength potential. Ornstein-Zernike equation. Direct correlation function. Static response function. Closing reports. Hyper-crosslinked chains (HNC) approximation. Percus-Yevick (PY) approximation. PY solution for hard ball liquid. Equation of state for hard spheres. Thermodynamic inconsistency. Modified HNC theory. Structure factor of liquid mixtures and molecular liquids.


3 - Numerical simulation of fluid systems


Stochastic and deterministic simulation methods. Molecular dynamics method. Verlet algorithms. Molecular dynamics at constant temperature and pressure. The Monte Carlo simulation method. Monte Carlo simulation in different ensembles.


4 - Dynamics of liquids


Time-dependent correlation functions. Inelastic diffusion of neutrons and measurement of the dynamic structure factor. Correlation functions of Van Hove. Principle of the detailed budget. Linear response theory. Answer function. Fluctuation-dissipation theorem. Diffusion of the particles. Diffusion coefficient. Velocity correlation function. Hydrodynamics and collective ways. Scattering Brillouin.


5 - Metastable states, undercooled liquids and glass transition.


Stability and metastability. Spinodal curve from the Van der Waals equation. Fluctuations and trends of correlation functions near the critical point. Subcooled liquids and glass transition. Angell diagram. Notes on the dynamic aspects and Mode Coupling theory. Configurational entropy and Kauzmann temperature.



Core Documentation

J.P. Hansen and I.R. McDonald, Theory of Simple Liquids, seconda edizione, Academic Press.
N. H. March and M. P. Tosi, Introduction to Liquid State Physics, World Scientific.
P. G. Debenedetti, Metastable Liquids, Princeton University Press.
Supplementary notes.


Type of delivery of the course

The exposition of the theories is carried out on the blackboard to allow students to understand the necessary analytical developments. In particular, it is shown how microscopic models can yield results to be compared with experiments. The methods are based either on the approximate resolution of integral equations or on numerical calculation by computer simulation- Experimental methods are then introduced which allow to observe the properties of the various systems of interest. For this reason, in some phases of the course the lessons on the blackboard are integrated with presentations with projection of experimental results and / or obtained with computer simulation.

Type of evaluation

The final exam is in oral form. It consists of two parts. The first is the presentation of a topic chosen by the student among those scheduled. This part allows us to highlight how much the student is able to to deepen a theme and go into the details of both the theoretical derivation and phenomenology. The student who is in the last year of the master's degree learns in this way to expose the topic as if it were a seminar, this is useful for his future as a graduating student. The second part of the oral exam consists of a question on another scheduled topic. In this case the student can answer without going into all the details of the derivation of the results. Knowing how to expose shortly a topic in a comprehensible way is also important in the different branches of Physics.