Decoherence in field theory: general couplings and slow quenches

被引：24

作者：

Lombardo, E

Mazzitelli, E

Rivers, RJ

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Theoret Phys Grp, London SW7 2BZ, England

来源：

NUCLEAR PHYSICS B | 2003年 / 672卷 / 03期

关键词：

D O I：

10.1016/j.nuclphysb.2003.08.043

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the onset of a classical order parameter after a second-order phase transition in quantum field theory. We consider a quantum scalar field theory in which the system-field (long-wavelength modes), interacts with its environment, represented both by a set of scalar fields and by its own short-wavelength modes. We compute the decoherence times for the system-field modes. and compare them with the other time scales of the model. We analyze different couplings between the system and the environment for slow quenches. Within our approximations decoherence is in general a short time event. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：462 / 486

页数：25

共 58 条

[1] Classical approximation for time-dependent quantum field theory: Diagrammatic analysis for hot scalar fields [J].

Aarts, G ;

Smit, J .

NUCLEAR PHYSICS B, 1998, 511 (1-2) :451-478

[2] Classical aspects of quantum fields far from equilibrium [J].

Aarts, G ;

Berges, J .

PHYSICAL REVIEW LETTERS, 2002, 88 (04) :416031-416034

[3]

[Anonymous], LECT NOTES INT SCH C

[4] Quantum effects after decoherence in a quenched phase transition [J].

Antunes, Nuno D. ;

Lombardo, Fernando C. ;

Monteoliva, Diana .

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (6 II) :1-066118

[5] Vortex string formation in a 3D U(1) temperature quench [J].

Antunes, ND ;

Bettencourt, LMA ;

Zurek, WH .

PHYSICAL REVIEW LETTERS, 1999, 82 (14) :2824-2827

[6]

ANTUNES ND, UNPUB

[7] Domain formation in finite-time quenches [J].

Bowick, M ;

Momen, A .

PHYSICAL REVIEW D, 1998, 58 (08)

[8] PHASE-TRANSITIONS OUT OF EQUILIBRIUM - DOMAIN FORMATION AND GROWTH [J].

BOYANOVSKY, D ;

LEE, DS ;

SINGH, A .

PHYSICAL REVIEW D, 1993, 48 (02) :800-815

[9] QUANTUM ROLLING DOWN OUT OF EQUILIBRIUM [J].

BOYANOVSKY, D ;

DEVEGA, HJ .

PHYSICAL REVIEW D, 1993, 47 (06) :2343-2355

[10]

BOYANOVSKY D, LECT DEL NATO ADV ST

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