
Group theory for Maths, Physics and Chemistry students
Category :Group Theory
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Contents: Introduction; Permutation Groups ; Symmetry Groups in Euclidean Space; Representation Theory; Character Tables; Some compact Lie groups and their representations. 
Statistical Mechanics. A short treatise
Category :Statistical Mechanics
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Contents: classical statistical mechanics; statistical ensambles; equipartition and critique; thermodynamic limit and stability; phase transitions; coxesistence of phases; exactly soluble models; brow . . . . . 
An introduction to quantum cluster methods
Category :Strongly Interacting Systems
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These lecture notes provide an introduction to quantum cluster methods for strongly correlated systems. Cluster Perturbation Theory (CPT), the Variational Cluster Approximation (VCA) and Cellular Dyna . . . . . 
Introduction a l optique non lieaire
Category :Nonlinear Optics
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Ce cours est une initiation au domaine
de l Optique NonLinéaire

Introduction to thermodynamics of spin models
Category :Statistical Mechanics
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A didactic description of the thermodynamic properties of classical spin systems is given in terms of their quantum counterpart in the Hamiltonian limit. Emphasis is on the construction of the relevan . . . . . 
Pair Correlations in Superfluid Helium 3
Category :Superfuidity
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In 1996 Lee, Osheroff and Richardson received the Nobel Prize for their 1971 discovery of superfluid helium 3  a discovery which opened the door to the most fascinating system known in condensed mat . . . . . 
Anderson Transitions
Category :Many body
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The physics of Anderson transitions between localized and metallic phases in disordered systems is reviewed. The term Anderson transition is understood in a broad sense, including both metalinsulator . . . . . 
NON LINEAR OPTICS
Category :Nonlinear Optics
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Contents: Nonlinear optics: Introduction; Second harmonic generation; The optical parametric oscillator; Quantum theory of the nonlinear susceptibility; Coherent Raman Scattering in Gases; The produ . . . . . 
Randomphase approximation and its applications in computational chemistry and materials science
Category :The GW method
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The randomphase approximation (RPA) as an approach for computing the electronic correlation energy is reviewed. After a brief account of its basic concept and historical development, the paper is dev . . . . . 
Optique nonlineaire en regimes continu et femtoseconde
Category :Nonlinear Optics
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 Le cours est divise en six parties. La premiere partie, intitulee
rappels d'optique lineaire
,
aborde la propagation d'un faisceau lumineux dans le cadre de l'optique lineaire, c'est a dire
. . . . . 

Towards Abinitio Calculation of Electron Energies in Semiconductor
Category :The GW method
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Contents: introduction; Greenfunction approach to manyelectron systems; properties of selfenergy function in GW scheme; towards actual calculation of GW selfenergy in the quasiparticle approximat . . . . . 
Quantum Magnetism Approaches to Strongly Correlated Electrons
Category :Many body
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Basic tools of quantum magnetism are introduced and used: spin coherent states path integral, spin wave theory, and continuum theory of rotators.The last lecture concerns pseudospin approaches . . . . . 
Critical Phenomena: An Introduction from a modern perspective
Category :Statistical Mechanics
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This lecture gives an introduction to critical phenomena that emphasizes the emergence of and the role played by diverging lengthscales. 
Many Body
Category :Many body
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Contents: LandauFermiliquid theory: Phenomenology; Second Quantization; Linear Response Theory; HartreeFock Approximation; Feynamm diagram technique; LandauFermi liquid theory: a microscopic just . . . . . 
Quasiparticle SelfConsistent GW Method for the Spectral Properties of Complex Materials
Category :The GW method
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The GWapproximation to the formally exact manybody perturbation
theory has been applied successfully to materials for several decades. Since the
practical calculations are extremely cumbersome, the . . . . . 