Some peculiarities in response to filling up the Fermi sphere with quarksS. V. Molodtsov1, 2, A. N. Sissakian1 and G. M. Zinovjev3
1 Joint Institute for Nuclear Research - 141980 Dubna, Moscow Region, Russia
2 Institute of Theoretical and Experimental Physics - 117259, Moscow, Russia
3 Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine UA-03680, Kiev-143, Ukraine
received 8 May 2009; accepted in final form 4 September 2009; published September 2009
published online 1 October 2009
Considering quarks as the quasi-particles of the model Hamiltonian with four-fermion interaction we study response to the process of filling up the Fermi sphere with quarks, calculate the vacuum pressure and demonstrate the existence of filled-in state degenerate with the vacuum one.
11.10.-z - Field theory.
11.15.Tk - Other nonperturbative techniques.
© EPLA 2009