logo
Supporting your high street Find out how »
Basket Image

Basket

Phase Transitions and Renormalization Group, Paperback / softback Book

Phase Transitions and Renormalization Group Paperback / softback

Part of the Oxford Graduate Texts series

Description

This work tries to provide an elementary introduction to the notions of continuum limit and universality in statistical systems with a large number of degrees of freedom.

The existence of a continuum limit requires the appearance of correlations at large distance, a situation that is encountered in second order phase transitions, near the critical temperature.

In this context, we will emphasize the role of gaussian distributions and their relations with the meanfield approximation and Landau's theory of critical phenomena.

We will show that quasi-gaussian or mean-field approximations cannot describe correctly phase transitions in three space dimensions.

We will assign this difficulty to the coupling of very different physical length scales, even though thesystems we will consider have only local, that is, short range interactions.

To analyze the unusual situation, a new concept is required: the renormalization group, whose fixed points allow understanding the universality of physical properties at large distance, beyond mean-field theory.

In the continuum limit, critical phenomena can be described by quantum field theories.

In this framework, the renormalization group is directly related to the renormalization process, that is, the necessity tocancel the infinities that arise in straightforward formulations of the theory.

We thus discuss the renormalization group in the context of various relevant field theories.

This leads to proofs of universality and to efficient tools for calculating universal quantities in a perturbative framework. Finally, we construct a general functional renormalization group, which can be used when perturbative methods are inadequate.

Information

  • Format: Paperback / softback
  • Pages: 472 pages, 28 b/w line drawings
  • Publisher: Oxford University Press
  • Publication Date:
  • Category: Mathematics
  • ISBN: 9780199665167

£36.99

£33.99

 
Free Home Delivery

on all orders

 
Pick up orders

from local bookshops

Also in the Oxford Graduate Texts series   |  View all