HENG-YU CHENGong, J.-O.J.-O.Gong2019-12-202019-12-202009https://scholars.lib.ntu.edu.tw/handle/123456789/436936journal article10.1103/PhysRevD.80.0635072-s2.0-70349876512https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349876512&doi=10.1103%2fPhysRevD.80.063507&partnerID=40&md5=66ead172710856e7ea521c51c271a87e