Emergence of the Unconventional Type-II Nambu-Goldstone Modes with Topological Origin in Bose Superfluids

Pan, Jian-Song1,2,3; Liu, W. Vincent1,2,4,5,6; Liu, Xiong-Jun3,5,6,7,8

2020-12-23

10.1103/PhysRevLett.125.260402

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

The Nambu-Goldstone (NG) modes in a nonrelativistic system can be classified into two types from their characteristic features: being of either an odd (type I) or an even (type II) power energy-momentum dispersion. Conventionally, the type-II NG modes may universally arise from spontaneous breaking of noncommutative symmetry pairs. Here, we predict a novel type of quadratically dispersed NG modes that emerges in mixed s and p band Bose superfluids in an optical lattice and, unlike the conventional type-II NG modes, cannot be solely interpreted with the celebrated symmetry-based argument. Instead, we show that the existence of such modes has a profound connection to the topological transition on projective complex order-parameter space. The detection scheme is also proposed. Our Letter reveals a new universal mechanism for emergence of type-II NG modes, which bridges intrinsically the Landau symmetry-breaking and topological theories.

SCI ; EI

英语

通讯

National Postdoctoral Program for Innovative Talents of China[BX201700156] ; National Natural Science Foundation of China[11825401,11904228,11804221,11761161003,11921005] ; National Key R&D Program of China[2016YFA0301604] ; Strategic Priority Research Program of Chinese Academy of Science[XDB28000000] ; Shanghai Talent Program of Shanghai Municipality[16DZ2260200] ; Science and Technology Commission of Shanghai Municipality[16DZ2260200] ; AFOSR[FA9550-16-1-0006] ; MURI-ARO through UC Santa Barbara[W911NF-17-1-0323] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01] ; Open Project of Shenzhen Institute of Quantum Science and Engineering[SIQSE202003]

Physics

Physics, Multidisciplinary

WOS:000601155900001

AMER PHYSICAL SOC

20210209764738

Optical lattices

Laser Beam Interactions:744.8 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4

PHYSICS

Web of Science

1.Shanghai Jiao Tong Univ, Wilczek Quantum Ctr, Sch Phys & Astron, Shanghai 200240, Peoples R China
2.Shanghai Jiao Tong Univ, TD Lee Inst, Shanghai 200240, Peoples R China
3.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
4.Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
5.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
7.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
8.Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Peoples R China

Pan, Jian-Song,Liu, W. Vincent,Liu, Xiong-Jun. Emergence of the Unconventional Type-II Nambu-Goldstone Modes with Topological Origin in Bose Superfluids[J]. PHYSICAL REVIEW LETTERS,2020,125(26).

Pan, Jian-Song,Liu, W. Vincent,&Liu, Xiong-Jun.(2020).Emergence of the Unconventional Type-II Nambu-Goldstone Modes with Topological Origin in Bose Superfluids.PHYSICAL REVIEW LETTERS,125(26).

Pan, Jian-Song,et al."Emergence of the Unconventional Type-II Nambu-Goldstone Modes with Topological Origin in Bose Superfluids".PHYSICAL REVIEW LETTERS 125.26(2020).