Amplification of Quantum Meson Modes in the Late Time of the Chiral Phase Transition | Zendy

K. Watanabe | Zendy; Y. Tsue | Zendy; Seiya Nishiyama | Zendy

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Amplification of Quantum Meson Modes in the Late Time of the Chiral Phase Transition

Author(s) -

K. Watanabe,

Y. Tsue,

Seiya Nishiyama

Publication year - 2005

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.113.369

Subject(s) - physics , pion , resonance (particle physics) , amplitude , oscillation (cell signaling) , meson , phase (matter) , parametric oscillator , quantum electrodynamics , quantum , quantum number , quantum phase transition , sigma model , phase transition , gaussian , particle physics , quantum mechanics , nonlinear system , biology , genetics

It is shown that there exists a possibility of amplification of amplitudes ofquantum pion modes with low momenta in the late time of chiral phase transitionby using the Gaussian wave functional approximation in the O(4) linear sigmamodel. It is also shown that the amplification occurs in the mechanism of theresonance by forced oscillation as well as the parametric resonance induced bythe small oscillation of the chiral condensate. These mechanisms areinvestigated in both the case of spatially homogeneous system and the spatiallyexpanded system described by the Bjorken coordinate.Comment: 17 pages, 16 figure

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