Improved ring approximation for the free energy in thermal scalar field theory

Author： Brandt F. T.   Frenkel J.   Siqueira J. B.  

Publisher： Edp Sciences

E-ISSN： 1286-4854|105|5|51001-51001

ISSN： 0295-5075

Source： EPL (EUROPHYSICS LETTERS), Vol.105, Iss.5, 2014-03, pp. : 51001-51001

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