Time-crystal ground state and production of gravitational waves from QCD phase transition

作     者：Andrea Addazi Antonino Marcianò Roman Pasechnik 

作者机构：Department of Physics &Center for Field Theory and Particle Physics Fudan University Shanghai 200433 China Department of Astronomy and Theoretical Physics Lund University Lund SE-223 62 Sweden 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2019年第43卷第6期

页      面：115-125页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：support by the NSFC(11875113) the Shanghai Municipality(KBH1512299) Fudan University(JJH1512105) supported by the Swedish Research Council,contract numbers 621-2013-428 and 2016-05996 CONICYT grant MEC80170112(Chile) the European Research Council(ERC)under the European Union’s Horizon 2020 research and innovation programme(668679) supported in part by the Ministry of Education,Youth and Sports of the Czech Republic,project LT17018 the framework of COST Action CA15213 “Theory of hot matter and relativistic heavy-ion collisions”(THOR) 

主　　题：primordial gravitational waves homogeneous gluon condensate effective Yang-Mills theory QCD phase tran sition 

摘      要：We propose a novel mechanism for the production of gravitational waves in the early Universe that originates from the relaxation processes induced by the QCD phase transition. While the energy density of the quark-gluon mean-field is monotonously decaying in real time, its pressure undergoes a series of violent oscillations at the characteristic QCD time scales that generate a primordial multi-peaked gravitational waves signal in the radio frequencies’ domain. The signal is an echo of the QCD phase transition that is accessible by planned measurements at the FAST and SKA telescopes.