Spontaneous symmetry breaking in quantum many-body systems (A solid-state physicist’s view of Goldstone’s theorem and all that)

Pramana ◽  
1985 ◽  
Vol 25 (4) ◽  
pp. 419-430
Author(s):  
G Morandi
Keyword(s):  
Solid State ◽  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Many Body ◽  
Many Body Systems

METHOD OF THERMODYNAMIC QUASIAVERAGES

1991 ◽  
Vol 05 (20) ◽  
pp. 3235-3253 ◽  
Author(s):  
V.I. YUKALOV
Keyword(s):  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Thermodynamic Limit ◽  
New Method ◽  
Many Body ◽  
Mixed States ◽  
External Sources ◽  
Pure States ◽  
Many Body Systems ◽  
General Conditions

A new method is developed to define pure states for many-body systems with spontaneous symmetry breaking. The advantage of the method is in the use of solely the standard thermodynamic limit, as compared to the Bogolubov method of infinitesimal external sources which invokes two limiting procedures: the standard thermodynamic limit and the elimination of external sources. The general conditions for obtaining pure states are formulated. When these conditions do not hold mixed states appear. The method is illustrated by calculations for two simple models.

MANY-BODY PHYSICS AND SPONTANEOUS SYMMETRY BREAKING

2006 ◽  
Vol 20 (19) ◽  
pp. 2579-2590 ◽  
Author(s):  
SPARTAK T. BELYAEV
Keyword(s):  
Symmetry Breaking ◽  
Density Matrix ◽  
Spontaneous Symmetry Breaking ◽  
Nuclear Structure ◽  
Bose Gas ◽  
Personal Perspective ◽  
Many Body ◽  
New Approach ◽  
Many Body Physics

The idea of spontaneous symmetry breaking in many-body physics from personal perspective (Bose-gas, nuclear structure and a new approach of Generalized Density Matrix).

scholarly journals Entanglement of Purification in Many Body Systems and Symmetry Breaking

2019 ◽  
Vol 122 (20) ◽  
Author(s):  
Arpan Bhattacharyya ◽  
Alexander Jahn ◽  
Tadashi Takayanagi ◽  
Koji Umemoto
Keyword(s):  
Symmetry Breaking ◽  
Many Body ◽  
Many Body Systems

Quantifying Spontaneously Symmetry Breaking of Quantum Many-Body Systems

2017 ◽  
Vol 68 (4) ◽  
pp. 405 ◽  
Author(s):  
Guo-Hui Dong ◽  
Yi-Nan Fang ◽  
Chang-Pu Sun
Keyword(s):  
Symmetry Breaking ◽  
Many Body ◽  
Many Body Systems
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