Entanglement and quantum order parameters

被引：14

作者：

Brandao, FGSL ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, QOLS, London SW7 2BW, England

[2] Univ London Imperial Coll Sci Technol & Med, Inst Math Sci, London SW7 2BW, England

来源：

NEW JOURNAL OF PHYSICS | 2005年 / 7卷

关键词：

D O I：

10.1088/1367-2630/7/1/254

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the quantum order parameters (QOPs) associated with the transitions between a normal conductor and a superconductor in the BCS and eta-pairing models and between a Mott-insulator and a superfluid in the Bose-Hubbard model are directly related to the amount of entanglement existent in the ground state of each system. This connection gives a physical meaningful interpretation to these QOP, which shows the intrinsically quantum nature of the phase transitions considered.

引用

页数：9

共 37 条

[1] Two-point versus multipartite entanglement in quantum phase transitions [J].

Anfossi, A ;

Giorda, P ;

Montorsi, A ;

Traversa, F .

PHYSICAL REVIEW LETTERS, 2005, 95 (05)

[2]

ANFOSSI A, 2005, CONDMAT0503600

[3]

[Anonymous], 2000, QUANTUM THEORY FIELD

[4] Entanglement properties of the harmonic chain [J].

Audenaert, K ;

Eisert, J ;

Plenio, MB ;

Werner, RR .

PHYSICAL REVIEW A, 2002, 66 (04) :14

[5] Entanglement cost under positive-partial-transpose-preserving operations - art. no. 0279015 [J].

Audenaert, K ;

Plenio, MB ;

Eisert, J .

PHYSICAL REVIEW LETTERS, 2003, 90 (02) :4

[6]

BALLENTINE LE, 1990, QUANTUM MECH

[7]

BRUKNER C, 2004, QUANTPH0410138

[8]

DELFT J, 2001, ANN PHYS LPZ, V3, P219

[9] Ground-state entanglement of the BCS model [J].

Dunning, C ;

Links, J ;

Zhou, HQ .

PHYSICAL REVIEW LETTERS, 2005, 94 (22)

[10] Entanglement in a valence-bond solid state [J].

Fan, H ;

Korepin, V ;

Roychowdhury, V .

PHYSICAL REVIEW LETTERS, 2004, 93 (22)

← 1 2 3 4 →