000			02841nam a22003978i 4500
001			CR9780511585913
003			UkCbUP
005			20200124160233.0
006			m|||||o||d||||||||
007			cr||||||||||||
008			090615s2007||||enk o ||1 0|eng|d
020			_a9780511585913 (ebook)
020			_z9780521876766 (hardback)
020			_z9781107406308 (paperback)
040			_aUkCbUP _beng _erda _cUkCbUP
050	0	0	_aQC174.17.S32 _bT66 2007
082	0	0	_a530.12 _222
100	1		_aToms, David J., _d1953- _eauthor.
245	1	4	_aThe Schwinger action principle and effective action / _cDavid J. Toms.
246	3		_aThe Schwinger Action Principle & Effective Action
264		1	_aCambridge : _bCambridge University Press, _c2007.
300			_a1 online resource (xi, 495 pages) : _bdigital, PDF file(s).
336			_atext _btxt _2rdacontent
337			_acomputer _bc _2rdamedia
338			_aonline resource _bcr _2rdacarrier
490	1		_aCambridge monographs on mathematical physics
500			_aTitle from publisher's bibliographic system (viewed on 05 Oct 2015).
505	0		_a1. Action principle in classical mechanics -- 2. Action principle in classical field theory -- 3. Action principle in quantum theory -- 4. The effective action -- 5. Quantum statistical mechanics -- 6. Effective action at finite temperature -- 7. Further applications of the Schwinger action principle -- 8. General definition of the effective action -- App. 1. Mathematical appendices -- App. 2. Review of special relativity -- App. 3. Interaction picture.
520			_aThis book, first published in 2007, is an introduction to the Schwinger action principle in quantum mechanics and quantum field theory, with applications to a variety of different models including Bose-Einstein condensation, the Casimir effect and trapped Fermi gases. The book begins with a brief review of the action principle in classical mechanics and classical field theory. It then moves on to quantum field theory, focusing on the effective action method. This is introduced as simply as possible by using the zero-point energy of the simple harmonic oscillator as the starting point. The book concludes with a more complete definition of the effective action, and demonstrates how the provisional definition used earlier is the first term in the systematic loop expansion. The renormalization of interacting scalar field theory is presented to two-loop order. This book will interest graduate students and researchers in theoretical physics who are familiar with quantum mechanics.
650		0	_aSchwinger action principle.
650		0	_aQuantum theory.
650		0	_aMathematical physics.
776	0	8	_iPrint version: _z9780521876766
830		0	_aCambridge monographs on mathematical physics.
856	4	0	_uhttps://doi.org/10.1017/CBO9780511585913
999			_c517814 _d517812