1/Nc expansion for the partition function in four fermion models
A. Barducci, R. Casalbuoni, M. Modugno, G. Pettini, R. Gatto
Abstract
We present a derivation of the bosonic contribution to the thermodynamical potential of four fermion models by means of a 1/Nc-expansion of the functional integral defining the partition function. This expansion turns out to be particularly useful to correct the mean field approximation expecially at low temperatures, where the relevant degrees of freedom are low-mass bosonic excitations (pseudogoldstones).
Create a lesson
Related papers
A global analysis of B DP and B D P decays
Bhubanjyoti Bhattacharya, Rida Boumris, David London
Transient PULSE: Code for the Transient Propagation of UltraLight (pseudo)Scalars to Earth
Jason Arakawa, Charles Cheung, Muhammad Hani Zaheer et al.
Top-Quark Mass Scheme Uncertainties in Higgs Boson Pair Production via Gluon Fusion
Clara Del Pio, Sebastian Jaśkiewicz, Rebecca von Kuk et al.
Effects of quadratic frequency chirping and carrier-envelope phase on Schwinger pair production in polarized electric fields
Abhinav Jangir
Brownian GPDs: A Stochastic Calculus Approach to Generalized Parton Distributions from Integral Constraints
Douglas Q. Adams, Simonetta Liuti, Zaki Panjsheeri et al.
Strangeness suppression, the ϕ meson and ΛΛ spin correlations from exact strangeness conservation at the quark level
P. Castorina, H. Satz