摘要
We study the properties of gravitational wave(GW)signals produced by first-order phase transitions during the inflation era.We show that the power spectrum of a GW oscillates with its wave number.This signal can be observed directly by future terrestrial and spatial GW detectors and through the B-mode spectrum in the CMB.This oscillatory feature of the GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after inflation.The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe.
作者
Haipeng An
Kun-Feng Lyu
Lian-Tao Wang
Siyi Zhou
安海鹏;吕坤峰;王连涛;周思益(Department of Physics,Tsinghua University,Beijing 100084,China;Center for High Energy Physics,Tsinghua University,Beijing 100084,China;Department of Physics,the Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong S.A.R.,China;Kavli Institute for Theoretical Physics,University of California,Santa Barbara,CA 93106,USA;Department of Physics and Enrico Fermi Institute,University of Chicago,Chicago,IL 60637,USA;Kavli Institute for Cosmological Physics,University of Chicago,Chicago,IL 60637,USA;The Oskar Klein Centre for Cosmoparticle Physics&Department of Physics,Stockholm University,AlbaNova,10691 Stockholm,Sweden)
基金
supported by NSFC(11975134)
the National Key Research and Development Program of China(2017YFA0402204)
the Tsinghua University Initiative Scientific Research Program
supported in part by the National Science Foundation(NSF PHY-1748958)
by the Heising-Simons Foundation
supported by the DOE(DE-SC0013642)
supported in part by the Swedish Research Council(2015-05333,2018-03803)。
