Tachyons| Tachyons |
In General
> s.a. causality violations; modified lorentz
symmetry; photon; Superluminal Propagation.
* Idea: Particles with
negative squared mass (imaginary mass); If they transform under the ordinary
action of the Lorentz group, as often assumed, they travel along spacelike
directions, i.e. faster than light or superluminally.
* Consequences:
Existence of tachyons and Lorentz invariance imply causality violations,
so a tachyon is considered to be sick in the context of particle
mechanics; In quantum field theory, the appearance of tachyonic degrees
of freedom indicates vacuum instability rather than the actual existence
of faster-than-light particles.
* Description: Scalar
ones can be described by a Klein-Gordon theory, vector ones by a Proca
theory, with m2 < 0.
* Pseudo-tachyons:
Particles which behave like tachyons in momentum space and like subluminal
particles (v < c) in ordinary space.
> Related topics:
see casimir effect;
mass [negative-mass particles].
> Online resources:
see MathWorld page;
Wikipedia pages on Tachyonic particles
and Tachyonic fields.
In Cosmology
> s.a. observational cosmology.
@ General references:
Davidson PRD(87),
& Owen PLB(86) [particles as Kaluza-Klein tachyons];
Feinstein PRD(02);
Gibbons PLB(02)ht [rolling down potential];
Fairbairn & Tytgat PLB(02)ht;
Frolov et al PLB(02)ht;
Kofman & Linde JHEP(02)ht [problems];
Steer & Vernizzi PRD(04)ht/03;
Gorini et al PRD(04);
Vernizzi & Steer MGX(06)ap/04 [vs standard inflation];
Keresztes et al PRD(09)-a0901 [and Big Brake singularity];
Nozari & Rashidi PRD(13)-a1306 [inflation, perturbations, etc];
Novosyadlyj a1311;
Agarwal & Afshordi PRD(14)-a1406 [Thermal Tachyacoustic Cosmology];
> s.a. Rigidity.
@ In FLRW spacetime: Tomaschitz IJMPD(98);
Dimitrijević et al a1904-proc.
@ As dark matter: Shiu & Wasserman PLB(02)ht;
Davies IJTP(04)ap;
Starke & Redmount a1905.
@ As dark energy: Bagla et al PRD(03)ap/02;
Padmanabhan PRD(02)ht;
Copeland et al PRD(05)ht/04;
de la Macorra et al PLB(06) [late-time behavior];
Calcagni & Liddle PRD(06);
Novosyadlyj a1311 [homogeneous tachyonic scalar fields];
Martins & Moucherek PRD(16)-a1606 [constraints];
Schwartz MPLA(17)-a1703 [revised energy-momentum tensor];
Khoeini-Moghaddam et al a1807 [fermionic tachyons].
References > s.a. special relativity.
@ Books, reviews: Kowalczyński 66;
Kreisler AS(73);
in Gribbin 77; Herbert 89;
Stonier 90.
@ General: Feinberg PR(67);
Feldman AJP(74)mar [bibliography];
Lévy-Leblond AJP(80)may;
Arntzenius BJPS(90);
González-Mestres ap/95 [and spacetime geometry];
Kowalczyński APPB(00)he/00 [proposed experimental searches];
Ehrlich AJP(03)nov [and teaching];
Romero et al MPLA(12)-a1112 [general action];
Rembieliński & Włodarczyk a1206 [Lorentz-covariant, consistent description];
Perepelitsa a1407 [theory, and response to objections];
Kapuścik IJTP(15)-a1412 [re error in Feinberg's paper].
@ Quantum: Fanchi FP(90) [parametrized relativistic quantum mechanics];
Schwartz IJMPA(16)-a1603 [towards a quantum field theory].
@ And field theory / matter:
Tanaka PTP(61);
Bilaniuk et al AJP(62)oct;
Bers et al in(71);
Moretti & Agresti NCB(95) [Klein-Gordon];
González-Mestres ap/96 [HECRs];
Bollini et al IJTP(99) [and electromagnetism];
Tomaschitz IJMPA(99);
Schwartz JMP(11)-a1011 [in general relativity];
Fazlpour & Banijamali JCAP(15)-a1410 [tachyon non-minimally coupled to torsion in teleparallel gravity];
Schwartz a1902 [and gravity].
@ Formal properties, kinematics: Basano IJTP(77) [and causal paradoxes];
Asaro AJP(96)apr [and complex velocity];
Madarász & Székely JAL(14)-a1303 [consistency with special relativity];
Madarász et al Sigma(14)-a1309 [axiomatic framework in Minkowski spacetime].
@ Related topics: Davidson PE(01)qp/02 [motion of charged ones];
Salesi IJMPA(97)qp/02 [pseudotachyonic Fermions];
Schwartz MPLA(11)-a1104 [and gravitational Cerenkov radiation];
Chashchina & Silagadze APPB(12)-a1211 [proposed type of particles,
"elvisebrions", that can be superluminal but are not tachyons];
Lee et al PRA(15)-a1503 [proposed experimental simulation of Dirac tachyons with trapped ions];
> s.a. Bradyons.
main page
– abbreviations
– journals – comments
– other sites – acknowledgements
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