Relationship Between Quantum and Classical Mechanics  

In General > s.a. origin of quantum mechanics; quantum statistical mechanics [relationship with classical]; types of states [semiclassical].
* Non-classical aspects: Negativity (the necessity of negative values in certain quasiprobability representations of quantum states such as the Wigner representation) and contextuality (the impossibility of a hidden-variable model of quantum theory wherein the representation of measurements does not depend on the context of the measurement (Bell-Kochen-Specker theorem).
* Issues: The study of the relationship between classical and quantum regimes of a theory, how the correspondence principle really works; The main questions are, Which states of the quantum theory have a classical interpretation? What predictions does the quantum theory make for the classical observables on them, and their fluctuations?
* Remark: In an abstract mathematical sense, quantum mechanics adds a metric on phase space to the symplectic structure used in classical mechanics.
* States: Quantum states differ from classical ones in their localization, interference properties and entanglement.
@ Reviews and books: Park 90; Gutzwiller AJP(98)apr-RL [interplay]; Landsman qp/05-in; Arndt & Zeilinger pw(05)mar.
@ General references: Woo AJP(86)oct; Landsberg FP(88); 't Hooft JSP(88); Hemion IJTP(90); Sibelius FP(89); Greenberg et al PRL(95) [invariant tori and matrix mechanics]; Wilkie & Brumer PRA(97), PRA(97) [Liouville dynamics]; Muga et al PLA(98) [observables]; Halliwell PRL(99)qp, qp/99-in [decoherent histories]; Floyd IJMPA(00)qp/99 [trajectory representation]; Bergeron JMP(01)qp; Ghose FP(02)qp/01, & Samal FP(02)qp/01; Page qp/02; Bartlett & Rowe JPA(03)qp/02; Mittelstaedt IJTP(05)qp/02 [and quantum logic]; Neumaier qp/03 [axiomatic]; Loris & Sasaki PLA(04)qp/03 [simple theorems]; Krüger qp/04 [quantum mechanics does not imply classical mechanics]; Pankovic et al qp/04 [as phase transition]; Curtis & Ellis EJP(06) [perturbations and probabilities]; Dreyer JPCS(07)qp/06 [classicality]; Khrennikov qp/06 [mathematical]; Nikolic AIP(07)-a0707; Spekkens PRL(08)-a0711 [negativity and contextuality]; de Gosson a0808 [common features].
@ Classical mechanics from quantum mechanics: Bracken qp/02 [as deformation of quantum mechanics]; Isidro et al a0808, IJMPA(09)-a0808 [Ricci flow]; Carcassi a0902 [as many-particle limit]; Hájícek FP(09) [maximum-entropy packets].
@ Quantum mechanics from classical mechanics: Heslot PRD(85); Ghose qp/00; Blasone et al PRA(05)qp/04, AP(05) [path-integral approach for 't Hooft's derivation]; Bracken qp/06-in [semiquantum mechanics]; Khrennikov TMP(07) [quantum mechanics as approximation to classical statistical mechanics]; Bender et al JPA(08) [quantum-like behavior of systems with complex energy]; Wetterich a0809 [four-state system].
@ In Bohm / pilot-wave interpretation: Shifren et al PLA(00) [effective potential]; Allori et al qp/01; Allori & Zanghì FP(09)qp/01-in; Poirier JCP(04)-a0802; Bowman FP(05); Trahan & Poirier JCP(06)-a0802, JCP(06)-a0802; Poirier & Parlant JPC(07)-a0803; Matzkin & Nurock SHPMP(08) [mismatch]; Poirier a0803.
@ Quantum theory not from quantization: Isidro qp/01; Galapon JMP(04)qp/02.
> Related topics: see classical mechanics [non-quantum systems]; quantum mechanics formalism [ambiguities] and foundations.

States: Quantum vs Classical Effects > s.a. complex structure; Explanation; fluctuation; phase transition; quantum effects; types of states.
* Criterion: One way to check when a system will start to deviate from its classical behavior is to look for when the quantum Wigner function deviates from the corresponding classical phase-space probability density.
* Issue: Is environmental decoherence required to prevent classically chaotic systems (e.g., tumbling satellites such as Hyperion) from exhibiting non-classical behavior within a short time span?
@ Chaotic systems: Eckhardt PRP(88); Ballentine PRA(01), PRA(02); Kaplan NJP(02); Gong & Brumer PRA(03); Schomerus & Jacquod JPA(05); Wiebe & Ballentine PRA(05) [classical Hyperion tumbling and decoherence], comment Schlosshauer FP(08)qp/06, reply Ballentine FP(08); Everitt NJP(09)-a0712 [SQUID ring]; Paul a0901; Goletz et al a0904 [semiclassical, long-time quantum transport].
@ Quantum vs classical evolution: Emerson & Ballentine PRA(01) [interacting spins]; Benet et al JPA(03) [fluctuations around classical average]; Habib qp/04 [Gaussian approximation]; Bojowald & Skirzewski RVMP(06)mp/05 [effective equations of motion and corrections to symplectic structure]; Gosselin et al EPJB(07)ht/06 [Berry phase corrections]; Katz et al PRL(07) [for driven non-linear Duffing resonator]; Gat JPA(07) [non-linear oscillator]; > s.a. hamilton-jacobi theory.
@ Quantum vs classical states: Loris & Sasaki PLA(04) [eigenvalues vs normal modes]; Everitt et al NJP(05) [and entanglement]; Yoder AJP(06)may [probability densities]; Hen & Kalev qp/07 [quantum states approaching classical distributions]; Groisman et al qp/07 [in terms of entanglement]; Alicki & Van Ryn JPA(08), Brida et al OE-a0804 [test of quantumness]; Kiesel et al PRA(08)-a0804 [based on Glauber-Sudarshan P-function]; Alicki et al JPA(08) [quantumness witnesses]; > s.a. distances.
@ Wave packet spreading: Ketzmerick et al PRL(97); Killip et al m.SP/01 [bounds on rate].
@ Wave packet revival: Nauenberg et al SA(94)jun; Robinett PRP(04); Wang & Heller JPA(09) [1D]; > s.a. Quantum Carpet, quantum systems.
@ Related topics: Senitzky PRL(81) [statistics]; Jacquod & Amiet JPA(97) [ergodic behavior]; Shvedov AP(02)mp/01 [symmetries], mp/01 [group actions]; Roncadelli & Schulman PRL(07) [density of paths around a semiclassical trajectory]; > s.a. Loschmidt Echo.

Related Topics > see decoherence; classical limit [including correspondence principle, localization]; Correspondence Principle; Ehrenfest Time; macroscopic systems; quantum chaos; quantum statistical mechanics.


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