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- W3101263485 abstract "The hadronic mechanism which leads to chiral symmetry restoration is explored in the context of the rho-pi-a_1 system using Massive Yang-Mills, a hadronic effective theory which governs their microscopic interactions. In this approach, vector and axial-vector mesons are implemented as gauge bosons of a local chiral gauge group. We have previously shown that this model can describe the experimentally measured vector and axial-vector spectral functions in vacuum. Here, we carry the analysis to finite temperatures by evaluating medium effects in a pion gas and calculating thermal spectral functions. We find that the spectral peaks in both channels broaden along with a noticeable downward mass shift in the a_1 spectral peak and negligible movement of the rho peak. The approach toward spectral function degeneracy is accompanied by a reduction of chiral order parameters, i.e., the pion decay constant and scalar condensate. Our findings suggest a mechanism where the chiral mass splitting induced in vacuum is burned off. We explore this mechanism and identify future investigations which can further test it." @default.
- W3101263485 created "2020-11-23" @default.
- W3101263485 creator A5055571744 @default.
- W3101263485 creator A5056423106 @default.
- W3101263485 date "2016-05-01" @default.
- W3101263485 modified "2023-10-13" @default.
- W3101263485 title "Massive Yang–Mills for vector and axial-vector spectral functions at finite temperature" @default.
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- W3101263485 doi "https://doi.org/10.1016/j.aop.2016.01.018" @default.
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