Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-06-24
Phys.Rev.D78:065030,2008
Physics
High Energy Physics
High Energy Physics - Theory
Four pages, two figures. Revised version published in the Physical Review D
Scientific paper
10.1103/PhysRevD.78.065030
We study the question of stability of the ground state of a scalar theory
which is a generalization of the phi^3 theory and has some similarity to
gravity with a cosmological constant. We show that the ground state of the
theory at zero temperature becomes unstable above a certain critical
temperature, which is evaluated in closed form at high temperature.
Brandt Fernando T.
Das Ashok
Frenkel Josif
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