Quantum-Spacetime Phenomenology

Amelino‐Camelia, Giovanni

doi:10.12942/lrr-2013-5

Cited by 756 publications

(963 citation statements)

References 678 publications

(1,593 reference statements)

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“…The limits on LIV from the threshold anomalies are at a level well beyond the sensitivity of the analysis reported in this paper (see Mattingly 2005;Amelino-Camelia 2013, and references therein). On the other hand, it is well known that threshold anomalies do not apply to the DSR scenario (see Mattingly 2005;Amelino-Camelia 2013). These results on threshold anomalies would imply that the analysis of spectral lags reported in this paper would not carry much weight on the debate concerning LIV (since more stringent limits may be established via the threshold anomalies), being instead a more valuable contribution to the debate on the DSR scenario.…”

Section: Other Possible LIV Testsmentioning

confidence: 69%

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Wei

Zhang

Shao

et al. 2017

ApJL

121

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Possible violations of Lorentz invariance (LIV) have been investigated for a long time using the observed spectral lags of gamma-ray bursts (GRBs). However, these generally have relied on using a single photon in the highest energy range. Furthermore, the search for LIV lags has been hindered by our ignorance concerning the intrinsic time lag in different energy bands. GRB 160625B, the only burst so far with a well-defined transition from positive lags to negative lags provides a unique opportunity to put new constraints on LIV. Using multiphoton energy bands we consider the contributions to the observed spectral lag from both the intrinsic time lag and the lag by LIV effects, and assuming the intrinsic time lag to have a positive dependence on the photon energy, we obtain robust limits on LIV by directly fitting the spectral lag data of GRB 160625B. Here we show that these robust limits on the quantum gravity energy scales are E QG,1 ≥ 0.5 × 10 16 GeV for the linear, and E QG,2 ≥ 1.4 × 10 7 GeV for the quadratic LIV effects, respectively. In addition, we give for the first time a reasonable formulation of the intrinsic energy-dependent time lag.

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Section: Other Possible LIV Testsmentioning

confidence: 69%

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Wei

Zhang

Shao

et al. 2017

ApJL

121

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“…The forms of the modified dispersion relation (MDR) and ones of GUP can be viewed as the alternative mechanisms to handle the black hole problems, such as the singularity, the "thermodynamics", the evaporation and the "information paradox" and so on. In the recent years, the implication and application of the effects of quantum gravity have attracted a great deal of attentions ( for recent reviews we refer to [33][34][35] ).…”

Section: Introductionmentioning

confidence: 99%

Bouncing universe with modified dispersion relation

Pan¹,

Huang²

2016

Gen Relativ Gravit

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In this paper, employing the modified dispersion relation, we have derived the general modified Friedmann equations and the corresponding modified entropy relations for the FriedmannRobertson-Walker (FRW) Universe. In this setup, we find that when the big bounce happens, its energy scale and its corresponding modified entropy behavior are sensitive to the value of k.In contrast to the previous work with k = 0, our work mainly demonstrates that the bouncing behavior for the closed Universe with k = 1 appears at the normal energy limit of the modified dispersion relation introduced, and when bouncing phenomenon is in presence, its modified entropy is just equal to zero. Surprisingly, when k = −1, the bouncing behavior is in absence. * Electronic address: wjpan˙zhgkxy@163.com † Electronic address: ychuang@bjut.edu.cn

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“…Therefore, the set of constraints (10) is equivalent to the constraints (4), (5), and their algebra is…”

Section: Classical Phase Space and Constraint Algebramentioning

confidence: 99%

“…The construction of κ-Poincaré algebra sparked a lot of interest and many of its properties have been investigated (in particular in the context of quantum gravity phenomenology, see [5] and references therein), but the most fundamental question as to whether κ-Poincaré indeed has anything to do with quantum space-time symmetries has never been answered in a satisfactory way. In this paper we would like to do so in the context of a toy model of quantum gravity in 3 space-time dimensions.…”

Section: Introductionmentioning

confidence: 99%

Symmetries of quantum spacetime in three dimensions

et al. 2016

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By applying loop quantum gravity techniques to 3D gravity with a positive cosmological constant Λ, we show how the local gauge symmetry of the theory, encoded in the constraint algebra, acquires the quantum group structure of so q (4), with q = exp (i ̵ h √ Λ 2κ). By means of an Inonu-Wigner contraction of the quantum group bi-algebra, keeping κ finite, we obtain the kappa-Poincaré algebra of the flat quantum space-time symmetries.

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Quantum-Spacetime Phenomenology

Cited by 756 publications

References 678 publications

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

A New Test of Lorentz Invariance Violation: The Spectral Lag Transition of GRB 160625B

Bouncing universe with modified dispersion relation

Symmetries of quantum spacetime in three dimensions

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