The investigation of symmetry nonrestoration scenarios has led to a controversy, with certain nonperturbative approximation schemes giving indications in sharp disagreement with those found within conventional perturbation theory. A Rayleigh-Ritz variational approach to the problem, which might be useful in bridging the gap between perturbative and nonperturbative viewpoints, is here proposed. As a first application, this approach is used in the investigation of a Z(2) x Z(2)-invariant thermal field theory with two scalar fields, placing particular emphasis on the region of parameter space that has been claimed to support symmetry nonrestoration.
Rayleigh-Ritz variational approximation and symmetry nonrestoration / AMELINO-CAMELIA, Giovanni. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 388:4(1996), pp. 776-782. [10.1016/s0370-2693(96)01199-9]
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Titolo: | Rayleigh-Ritz variational approximation and symmetry nonrestoration | |
Autori: | ||
Data di pubblicazione: | 1996 | |
Rivista: | ||
Citazione: | Rayleigh-Ritz variational approximation and symmetry nonrestoration / AMELINO-CAMELIA, Giovanni. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 388:4(1996), pp. 776-782. [10.1016/s0370-2693(96)01199-9] | |
Handle: | http://hdl.handle.net/11573/413947 | |
Appartiene alla tipologia: | 01a Articolo in rivista |