Decoherence| Decoherence |
In General > s.a. quantum
systems; QED;
quantum chaos; quantum
cosmology; quantum gravity;
vacuum.
* Idea: The evolution of a pure state into an effectively mixed one
due to system-bath interaction; An important concept in the emergence of classical
behavior from quantum states for macroscopic systems; Decoherence destroys
quantum correlations and interference in Wigner distributions and
washes out
fine structure in classical distributions, bringing the two distributions
and the expectation values closer together.
* Decoherence function:
The function d(
,
)
measures the quantum interference between history propositions and
.
* Decoherence time scale: 
d
is the time over which quantum coherence of the system is lost.
* Proposal (Kay): Based
on a unitary framework for quantum gravity, assumes that the operators tied
to the gravitational degrees of freedom are unobservable and
equates
physical entropy with matter-gravity entanglement entropy.
Specific Models and Systems > s.a. dissipation;
interpretations of quanrum mechanics; quantum
spacetime; Rotor;
spin models.
@ Spacetime fluctuations: Power & Percival PRS(00);
Wu et al NCB(00); > s.a. matter
in quantum gravity.
@ Chaotic environment: Blume-Kohout & Zurek PRA(03)qp/02;
Hornberger & Sipe PRA(03)
[massive Brownian particle].
@ Classically chaotic: Hu & Shiokawa ht/95; Zurek PS(98)qp,
APPB(98);
Jalabert & Pastawski PRL(01)cm/00;
Toscano et al PRA(05).
@ Coupled oscillators: de Ponte et al qp/03;
Lombardo
& Villar IJMPB(06)qp/05 [and
chaotic degrees of freedom], PRA(05)qp [composite environment].
@ Gravitational waves: Reynaud et al EPL(01)qp, IJMPA(02)gq/01 [and
planets]; Reynaud et al in(07)-a0806, a0801-in.
@ Gravitation, other: Kiefer PRD(92);
Kay CQG(98)ht [Newtonian
quantum gravity]; Kiefer LNP(00);
Haba IJTP(01)
[thermal gravitons]; Calucci CQG(04)qp/03 [graviton
emission]; Terashima & Ueda JPA(05)qp/03 [and
spacetime curvature]; Gambini et al GRG(07)
[pedagogical]; Kay & Abyaneh a0710 [Kay's
proposal]; Anastopoulos & Hu a0803 [gravity-induced].
@ Cosmology:
Castagnino & Lombardo GRG(96); Campo & Parentani a0805 [entropy
of fluctuations].
@ Thermodynamic limit: Lugiewicz & Olkiewicz JPA(02) [spin system];
Frasca
cm/04-in
[fully polarized states].
@ Particle in non-trivial background: Mensky & Novikov IJMPD(96) [with
closed timelike curves].
@ Spin environment: Gedik SSC(06)qp/05 [2
spins in spin environment]; Cormick & Paz a0709,
a0709, a0804;
> s.a. spin models.
@ Oscillator + other system: Unruh & Zurek PRD(89)
[+ 1D massless scalar]; Sinha PLA(97)qp/05 [at T =
0]; Maia & Dalvit PRA(00)qp [+
radiation]; Schlosshauer et al PRA(08)-a0712 [+
2-level systems].
@ Other models: Meyer qp/98 [based
on Dirac equation], qp/98 [coarse
+ fine degrees of freedom, scale decoherence]; Lanz & Vacchini IJTP(98)qp/99 [isolated
system]; Kleckner & Ron
PRA(01)
[gas reservoir]; Salgado & Sánchez-Gómez qp/02 [spectral
and stochastic methods]; van Wezel et al PRL(05)cm/04,
cm/06 [spontaneous
symmetry breaking]; Lombardo & Villar PLA(05)
[Brownian motion, zero-point fluctuations]; Serafini et al JOB(05)qp [continuous
variables]; Braun PRL(06)qp/05 [many
2-level atoms]; Prokof'ev & Stamp PRA(06)
[quantum walk on hypercubic lattice]; Barenboim et al NPB(06)
[neutrinos]; Bellomo et al JPA(07)
[frictional]; Domínguez-Clarimon AP(07)
[particle crossing a medium]; Pineda a0711-PhD
[1, 2, and n qubits]; Adami & Erdos a0802 [electron coupled to phonon
bath].
@ Electrodynamics: Kiefer PRD(92);
Anglin & Zurek PRD(96)qp/95;
Haba JPA(00)
[at finite T]; Levinson qp/03 [e beams],
Hsiang & Ford PRL(04)
[electrons and electromagnetic field fluctuations]; Bellomo et al PRA(06)
[free particle and electromagnetic field at finite T]; > s.a. quantum
field theory effects in curved spacetime.
@ Self-induced: Castagnino & Lombardi IJTP(03)qp/02 [in
cosmology], SHPMP(04)
[general]; Schlosshauer PRA(05)qp
[spin bath model]; Castagnino & Lombardi PRA(05)qp
[time], PhSc(05)
[and classical limit]; Castagnino qp/05 [non-integrable
systems].
@ And Lorentz invariance: Milburn PRA(91), gq/03,
NJP(06);
Bertlmann qp/04-in
[particle physics]; Cai et al PRA(07)
[suppressed dephasing].
@ Matter-wave interferometers: Hackermüller Nat(04)feb
[C70 molecules,
double slit,
T > 1000 K]; Uys et al PRL(05),
Burkov et al PRL(07);
Villar & Lombardo a0707,
a0707-JPCS.
Related Topics > s.a. arrow
of time; experiments
in quantum mechanics; probability; quantum
effects [quantum jumps].
* Quantum darwinism:
The redundant recording of information about a decohering system by its environment.
@ Decoherence-free subspace: Mundarain & Orszag qp/06 [two-level
system in squeezed bath]; Brooke et al PRA(08)-a0806 [N qubits].
@ Quantum darwinism: Blume-Kohout & Zurek
a0704 [in brownian motion].
@ And pilot wave: Sanz & Borondo EPJD(07)qp/03 [decoherence
does not imply classical limit]; > s.a. pilot
wave.
@ And measurement: Schlosshauer RMP(04);
d'Espagnat FP(05)
[and Wigner's friend]; > s.a. classical
limit.
@ Time scale: Terra Cunha et al qp/04;
Dalton JMO(05)qp/04 [macroscopic
systems]; Roa et al PLA(07) [stability]; > s.a. wave
function
collapse.
@ Other topics: Schulman qp/97 [interaction
with walls, and error]; Halliwell PRD(99)qp [fate
of information]; Omnès qp/01 [as
irreversible process]; Camacho IJMPD(01)gq [equivalence
principle
violations]; Frasca PLA(01), PLA(03)
[in thermodynamic limit]; Mohrhoff qp/01 [meaning];
Berman et al PRA(04)qp [survival
of quantum
properties]; Schützhold & Tiersch qp/04 [and
Casimir effect]; Alicki OSID(04)-a0801 [pure
decoherence without dissipation], qp/05-in
[decoherence
control]; Halliwell PRA(05)
[commuting X and P, emergent classicality].
References > s.a. entanglement; histories-based
quantum mechanics; Open System.
@ Reviews: Zurek PT(91)qp/03,
& Paz NCB(95); Zeh qp/95-in;
Giulini et al 96; Zurek PTRS(98)qp;
Joos
qp/99-in
[environmental]; Anastopoulos IJTP(02)qp/00;
Zurek RMP(03)qp/01;
Joos et al 03; O'Connell qp/05-in;
Halliwell CP(05)qp;
Zeh qp/05-in.
@ Pedagogical: Haroche PT(98)jul; Bhattacharya et al LAS(02)qp/04;
Finkelstein qp/05 [energy
decoherence]; Hornberger qp/06-ln.
@ General theory: Joos & Zeh ZPB(85),
Joos in(86) [environmental]; Omnès PRA(97);
Wright CMP(98)
[decoherence functionals]; Vecchi qp/00 [assumptions];
Fiete & Heller PRA(03)qp/02 [semiclassical];
Blanchard et al PLA(03)
[various effects]; Na & Wyatt PS(03)
[hydrodynamic formulation]; Znidaric & Prosen JOB(05)qp [t-dependence];
Castagnino & Laura qp/05,
et al qp/06 [formalism
for open and closed systems]; Merkli et al PRL(07);
Anastopoulos & Hu a0803 [intrinsic/fundamental
decoherence]; Gamble a0805-th;
Castagnino et al PhSc(07)
[conceptual framework].
@ Related topics: Morikawa PRD(90);
Finkelstein PRD(93)gq;
Twamley PRD(93)gq;
Zurek & Paz
PRL(94)gq;
Unruh & Wald PRD(95)ht [causality
or energy-momentum conservation]; Gell-Mann & Hartle in(98)gq/95;
Anglin et al PRA(97)qp/96;
Dugic PS(96);
Kiefer & Joos qp/98-in;
Paz & Zurek
qp/00-ln;
Frasca PLA(03)qp/02 [thermodynamic
limit]; Scherer & Soklakov qp/04 [long
histories]; Weinstein a0807 [emergence of classicality is not generic].
@ Conceptual: Zeh qp/96, qp/99-in;
Stamp SHPMP(06).
@
Phase space picture: Kiefer qp/97,
Diósi qp/02-in,
Ozorio de Almeida JPA(03)
[Wigner
functions]; Grewal PRA(02)
[and coherent states].
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22 jul 2008