In-medium dispersion relations of charmonia studied by the maximum entropy method

被引：16

作者：

Ikeda, Atsuro ^{[1
]}

Asakawa, Masayuki ^{[1
]}

Kitazawa, Masakiyo ^{[1
,2
]}

机构：

[1] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[2] KEK, KEK Theory Ctr, Inst Particle & Nucl Studies, J PARC Branch, 203-1 Shirakata, Tokai, Ibaraki 3191106, Japan

来源：

PHYSICAL REVIEW D | 2017年 / 95卷 / 01期

基金：

日本学术振兴会;

关键词：

TEMPERATURE;

D O I：

10.1103/PhysRevD.95.014504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study in-medium spectral properties of charmonia in the vector and pseudoscalar channels at nonzero momenta on quenched lattices, especially focusing on their dispersion relation and the weight of the peak. We measure the lattice Euclidean correlation functions with nonzero momenta on the anisotropic quenched lattices and study the spectral functions with the maximum entropy method. The dispersion relations of charmonia and the momentum dependence of the weight of the peak are analyzed with the maximum entropy method together with the errors estimated probabilistically in this method. We find a significant increase of the masses of charmonia in medium. We also find that the functional form of the charmonium dispersion relations is not changed from that in the vacuum within the error even at T similar or equal to 1.6T(c) for all the channels we analyze.

引用

页数：11

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