Fields and Particles in de Sitter Spacetime |
In General
> s.a. classical, spinning and
quantum particles; geodesics; green
functions; huygens principle.
@ References: Woodard gq/04-proc [against de Sitter invariance in field theory];
Cheung et al JHEP(08)-a0709 [effective field theory of inflationary fluctuations];
Akhmedov et al PAN(12)-a0905 [non-conformal coupling and perpetuum mobile];
Cotăescu GRG(11)-a1006 [Casimir operators for field representations of isometries];
Cotăescu MPLA(13)-a1210 [representations of the de Sitter group];
> s.a. particle effects.
@ Spin-1/2 fields: Rodrigues et al AACA(16)-a1502 [Clifford-bundle approach].
@ Gauge fields: Rather et al a1408 [inner product].
> Scalar fields:
see klein-gordon fields and quantum
klein-gordon fields.
> Other types of fields:
see dirac fields; electromagnetic
fields; fields of arbitrary spin;
perturbations [and waves].
Quantum Fields
> s.a. quantum field theory effects in curved spacetimes.
* Idea: Free scalar fields
in de Sitter space have a one-parameter family of states invariant under
the de Sitter group, including the standard thermal vacuum; Except for
the thermal, Bunch-Davies vacuum, these states are unphysical when
gravitational interactions are included
[@ Kaloper et al JHEP(02)ht].
@ General references:
Wyrozumski CQG(88),
Molina-Paris gq/97-MG8,
Sarkar & Biswas IJMPA(00) [particles];
Bros et al CMP(98) [framework];
Bertola et al PLB(99)ht [and higher-dimensional Minkowski];
Goldstein & Lowe PRD(03)ht/02;
Collins & Holman PRD(04)ht/03 [new propagator];
Greene et al JHEP(06)ht/05 [correction to Bunch-Davies];
Losic & Unruh PRD(06)gq [gravitational backreaction];
Joung et al JHEP(06)ht,
JHEP(07)-a0707 [group theoretical];
Gazeau & Lachièze-Rey PoS-ht/06 [survey];
Gómez & Villaseñor CQG(08)-a0712 [no unitary dynamics];
Burgess et al JCAP(10)-a1005 [scalar field, breakdown of semiclassical methods];
Marolf & Morrison PRD(10)-a1006 [loop corrections to scalar propagators];
Greenwood et al PLB(10)-a1008 [particle creation];
Rajaraman PRD(10)-a1008 [Euclidean, massless fields];
Colosi a1010 [scalar, general boundary formulation];
Singh et al PRD(13)-a1302;
Sofi et al a1312;
Takook a1403;
Boddy et al FP-a1405 [with no quantum fluctuations];
Feng LHEP-a2003 [generally covariant scheme];
> s.a. quantum field theory in curved backgrounds.
@ Vacuum state:
Allen PRD(85);
Collins ht/03-conf
[α-vacua and divergences];
Brunetti et al JHEP(05) [α-vacua];
't Hooft & Nobbenhuis CQG(06)gq [vacuum with zero energy];
Boyanovsky & Holman JHEP(11)-a1103 [stability of the Bunch-Davies vacuum];
Leonard et al JMP(13) [vacuum polarization];
Aslanbeigi & Buck JHEP(13)-a1306,
Surya et al JHEP(19)-a1812 [Sorkin-Johnston vacuum];
Aalsma et al JHEP(19)-a1905 [Unruh state, scalar field].
@ Interacting fields:
Akhmedov & Buividovich PRD(08)-a0808 [interacting theories are non-unitary];
Hollands AHP(12)-a1105 [massless];
Akhmedov IJMPD(14)-a1309-ln;
Barata et al a1607;
Jäkel & Mund PLB(17)-a1703 [2D].
@ Specific types:
Pol'shin ht/00,
ht/00,
JPA(00)ht [Klein-Gordon, spinor];
Spradlin et al ht/01-ln [conformal field theory];
Garidi et al JMP(03)ht [massive spin-2 fields];
Finelli et al PRD(05)gq/04 [graviton, regularization];
Balakin et al IJMPD(08)-a0710 [Einstein-Yang-Mills-Higgs, non-minimal coupling];
Alencar et al EPL(12)-a1110 [scalar, D-dimensional];
Feng & Mochena a2012 [Dirac fields, generally covariant];
> s.a. deformed quantum
fields; modified QED.
@ Related topics: Redmount PRD(06) [energy of wavepackets and detector response];
Marolf & Morrison CQG(09)-a0808 [1+1 dimensions, group averaging and de Sitter-invariant states];
Higuchi CQG(09)-a0809 [tree-level instability];
Poon PhD(09)-a0901 [time evolution is not unitarily implementable for a pure Klein-Gordon field];
Burgess et al JCAP(10) [Super-Hubble fluctuations and the dynamical RG];
Pérez-Nadal et al JCAP(10) [stress-tensor fluctuations];
Lagogiannis et al a1106 [odd-dimensional de Sitter space is transparent];
Akhmedov et al PRD(20)-a2005 [in the static patch].
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