Spontaneous breaking of Lorentz symmetry in string theory

Kostelecký, V. Alan; Samuel, Stuart

doi:10.1103/physrevd.39.683

Cited by 1,526 publications

(1,942 citation statements)

References 20 publications

Supporting

Mentioning

1,895

Contrasting

Unclassified

Order By: Relevance

“…Basically, the starting point of these approaches has been the well defined Hamiltonian operators of the quantum theory together with an heuristical characterization of the semiclassical ground state [2,3,4,5]. String theory has also provided a possible connection between quantum gravity and LIV [6,7]. The MDR (1) generically arise from Lorentz-violating dimension five operators in the Lagrangian, upon which we focus in the following.…”

Section: Introductionmentioning

confidence: 99%

Synchrotron radiation in Myers–Pospelov effective electrodynamics

Montemayor

Urrutia

2005

Physics Letters B

View full text Add to dashboard Cite

In the framework of the classical effective Lorentz invariance violating (LIV) model of MyersPospelov, we present a complete calculation of the synchrotron radiation produced by a circularly moving charge in the rest frame of the model. Within the full far-field approximation we compute exact expressions for the electric and magnetic fields, the angular distribution of the power spectrum and the total emitted power in the m-th harmonic. We also perform an expansion of the latter quantity in terms of the electromagnetic LIV parameter and calculate the average degree of circular polarization to first order in such a parameter. In both cases we find, under adequate circumstances, the appearance of rather unexpected and large amplifying factors, which go together with the otherwise negligible naive expansion parameter. This opens up the possibility of selecting astrophysical sources where these amplifying factors are important, to explore further constraints imposed upon the LIV parameters by synchrotron radiation measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

Synchrotron radiation in Myers–Pospelov effective electrodynamics

Montemayor

Urrutia

2005

Physics Letters B

View full text Add to dashboard Cite

show abstract

“…On the other hand, possible Lorentzviolating (LV) extensions of the SM, standard model extensions (SME), have, apparently, no troubles both theoretically and experimentally [1,2] and many theories exhibiting Lorentz violation were proposed in recent years. We can mention the cases of the SM Electroweak sector [3], Quantum Chromodynamics [4], Quantum Electrodynamics [5], a pure Yang-Mills theory [6] and other theories [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Mass renormalization in Lorentz-violating scalar field theory

Carvalho¹

2013

Physics Letters B

View full text Add to dashboard Cite

show abstract

“…It follows that the irreducible representations of the VSR groups are one-dimensional, labeled by the K 3 eigenvalue. 1 We will build particle theories that are not invariant under the full Lorentz symmetry but only under Hom (2) or Sim(2). As pointed out by Cohen and Glashow, this reduced set of spacetime symmetries is fully compatible with all kinematic tests of special relativity.…”

Section: Symmetriesmentioning

confidence: 99%

“…It is possible, for instance, for the SO(3, 1) Lorentz invariance of physics to break down to the subgroups Hom(2) or Sim (2). These subgroups do not admit invariant tensors which could act as spurions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spin dependent masses and symmetry

2007

View full text Add to dashboard Cite

Recently, Cohen and Glashow pointed out that all known experimental tests of relativistic kinematics are consistent with invariance of physics under the four-parameter subgroup Sim(2) of the Lorentz group. The massive one-particle irreducible representations of ISim (2), that is Sim(2) times spacetime translations, are all one-dimensional, labeled by spin along a preferred axis. Consequently particle theories based on this symmetry can accomodate lepton number conserving masses for left-handed neutrinos without the need to introduce sterile states. The same property of massive particle representations, however, also leads to the possibility that particle masses may be split within the diffferent spins of a representation of the ordinary Poincare group. In this article we investigate the low-energy structure of theories with spin dependent masses and comment on the bounds on such effects.

show abstract

Spontaneous breaking of Lorentz symmetry in string theory

Cited by 1,526 publications

References 20 publications

Synchrotron radiation in Myers–Pospelov effective electrodynamics

Synchrotron radiation in Myers–Pospelov effective electrodynamics

Mass renormalization in Lorentz-violating scalar field theory

Spin dependent masses and symmetry

Contact Info

Product

Resources

About