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An exactly soluble model with tunable p-wave paired fermion ground states
Yu, Yue; Wang, Ziqiang; Yu, Y , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2008
发表期刊EPL
ISSN0295-5075
卷号84期号:5页码:-
摘要Motivated by the work of Kitaev, we construct an exactly soluble spin-1/2 model on a honeycomb lattice whose ground states are identical to Delta(1x)p(x) + Delta(1y)p(y) + i(Delta(2x)p(x) + Delta(2y)p(y))- wave paired fermions on a square lattice, with tunable paring order parameters. We derive a universal phase diagram for this general p-wave theory which contains a gapped A-phase and a topologically non-trivial B-phase. We show that the gapless condition in the B-phase is governed by a generalized inversion (G-inversion) symmetry under p(x) <-> Delta(1y)/Delta(1x)p(y). The G-inversion symmetric gapless B-phase near the phase boundaries is described by (1 + 1)- dimensional gapless Majorana fermions in the asymptotic long-wavelength limit, i. e. the c = 1/2 conformal. field theory. The gapped B-phase has G-inversion symmetry breaking and is the weak pairing phase described by the Moore-Read Pfaffian. We show that in the gapped B-phase, vortex pair excitations are separated from the ground state by a. finite energy gap. Copyright (C) EPLA, 2008
部门归属[Yu, Y] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Wang, ZQ] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
关键词Quantum Computation Anyons Phase
学科领域Physics
资助者NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747]
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收录类别SCI
资助者NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747] ; NNSF of China; Ministry of Science and Technology of China; CAS; U. S. DOE[DE-FG02-99ER45747]
WOS记录号WOS:000263598800021
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5418
专题理论物理所1978-2010年知识产出
通讯作者Yu, Y , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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GB/T 7714
Yu, Yue,Wang, Ziqiang,Yu, Y , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. An exactly soluble model with tunable p-wave paired fermion ground states[J]. EPL,2008,84(5):-.
APA Yu, Yue,Wang, Ziqiang,&Yu, Y , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2008).An exactly soluble model with tunable p-wave paired fermion ground states.EPL,84(5),-.
MLA Yu, Yue,et al."An exactly soluble model with tunable p-wave paired fermion ground states".EPL 84.5(2008):-.
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