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Free Theoretical Physics Books

Basic Physics
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Theoretical Physics
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Modern Physics
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Condensed Matter
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Atomic Physics
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Particle Physics
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Nuclear Physics
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Quantum Physics
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Quantum Field Theory
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Quantum Mechanics
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Electricity&Magnetism
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ElectroDynamics
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Solid State Physics
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Superconductivity
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Mathematical Physics
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Plasma-Physics
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Thermodynamics
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Fluid Mechanics
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Mechanics
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Stastical Mechanics
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Continuum Mechanics
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Classical Mechanics
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Chemical Physics
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Vibration&Waves
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Conservation Laws
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Computational Physics
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Medical Physics
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Optics
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Dynamics
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Relativity
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Astronomy
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BioPhysics
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GeoPhysics
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Psychophysics
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Kinetic Theory
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Statistical Physics
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Online Books

This section contains free e-books and guides on Theoretical Physics, some of the resources in this section can be viewed online and some of them can be downloaded.

Theoretical Physics Books
Online Books
Foundations and New Methods in Theoretical Physics Lecture Notes

Online | NA Pages | English
This lecture note explains the following topics: Scattering Amplitudes, The functional renormalization group method, Black hole thermodynamics, Tools for supersymmetry, Theory of cosmological perturbations, Canonical gravity, Quantization of gauge systems, Vector models in the large N limit, Neutrinos in astrophysics and cosmology, Renormalization of the electroweak Standard Model, BRS symmetry and cohomology.

 
M.Phys Option in Theoretical Physics

PDF | 113 Pages | English
This note covers the following topics: Path Integrals in Quantum Mechanics, Stochastic Processes and Path Integrals, Statistical mechanics in one dimension, Classical Field Theory , Canonical Quantization, Interacting Quantum Fields, Path Integrals in Quantum Field Theory, Many-Particle Quantum Systems, Phase Transitions.

 
Eight Lectures on Theoretical Physics

PDF | 99 Pages | English
This note covers the following topics: Reversibility and Irreversibility, Thermodynamic States of Equilibrium in Dilute Solutions, Atomic Theory of Matter, Equation of State for a Monatomic Gas, Heat Radiation and Electrodynamic Theory, Heat Radiation. Statistical Theory, General Dynamics. Principle of Least Action, Principle of Relativity.

 
String Theory for Undergraduates

Online | NA Pages | English
This note covers the following topics: Lorentz transformations, Light-cone coordinates, Energy and momentum, Compact dimensions, orbifolds, Relativistic electrodynamics, Gauss' law, Gravitation and Planck's length, Gravitational potentials, compactification, and large extra dimensions, area formula for spatial surfaces, Relativistic strings: Nambu-Goto action, equations of motion and boundary conditions, Periodicity conditions for the motion of closed strings, The formation of cusps, Conserved currents in E&M, Conserved charges in lagrangian mechanics, Closed strings and Heterotic string theory.

 
Concepts in Theoretical Physics

Online | NA Pages | English
These lectures provide bite sized introductions to a handful of topics in theoretical physics, aimed at first year undergraduates. They were given from 2008 to 2011. Presentations can be downloaded below.The lecture notes can be downloaded in both PDF and PS formats

 
Lectures on String Theory

Online | NA Pages | English
These lecture notes provide a detailed introduction to the bosonic string and conformal field theory, aimed at "Part III" (i.e. masters level) students. The full set of lectures notes can be downloaded here and weigh in at around 200 pages. Individual sections can be downloaded below. Last updated February 2012.This covers the following: The Classical String, The Quantum String, Open Strings and D-Branes, Introducing Conformal Field Theory, Path Integrals and Ghosts, Scattering Amplitudes, Low Energy Effective Actions, Compactification and T-Duality

 
Introduction To String Field Theory (PDF 247p)

PDF | 247 Pages | English
This book covers the following topics: General light cone, General BRST, General gauge theories, Particle, Classical mechanics, Light-cone quantum mechanics, BRST quantum mechanics, Graphs, BRST field theory, Light-cone field theory and Gauge-invariant interactions.

 
Introduction to String Theory (PDF 79p)

PDF | 79 Pages | English
This book covers the following topics: Strings in QCD, The classical string, Open and closed strings, Quantization, Lorentz invariance, Interactions and vertex operators, BRST quantization, The Polyakov path integral, T-Duality, Complex coordinates, Fermions in strings, The GSO Projection, Zero modes.

 
Open Superstring Field Theory Applied to Tachyon Condensation

PDF | 109 Pages | English
This note explains the following topics: Bosonic String Field Theory, Superstring Field Theory and its Application to Tachyon Condensation, Towards Supersymmetric Extension of Vacuum String Field Theory.

 
Electricity, Optics and Modern Physics

Online | NA Pages | English
This note explains the following topics: Electric fields, Electric forces, Electromagnetic waves, Geometical optics, Gauss' law, Diffraction and polarization, Interference of light, Capacitance, Current and resistance, Magnetic fields, Inductance, Faraday's law and Nuclear energy.

 
Superstrings Tutorial

Online | NA Pages | English
This note explains the following topics: String Basics, Closed strings,Open strings,Modes, gravitons,Interactions,Perturbation theory, D-branes, Superstrings, Extra dimensions, Kaluza-Klein theory, String duality, M-theory, Black holes.

 
The Meaning of Einstein's Equation

Online | NA Pages | English
This is a brief introduction to general relativity, designed for both students and teachers of the subject. It mainly deals with Einstein's Equation and Some Consequences.

 
String Theory (Siopsis G.)

Online | NA Pages | English
This note explains the following topics: Conformal field theory, BRST Quantization, Tree-level amplitudes, Loop amplitudes, Compactification and duality, Superstrings, Heterotic strings, D-branes, Strings at strong coupling.

 
Classical theoretical physics
What is String Theory [PDF 153p]
Fields [PDF 885p]
Introduction to Superstring Theory [PDF 244p]
Theory of Solids I
Theory of Solids II
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