Constraints on Lorentz violation from gravitational Čerenkov radiation

Kostelecký, V. Alan; Tasson, J. D.

doi:10.1016/j.physletb.2015.08.060

Cited by 123 publications

(154 citation statements)

References 95 publications

(139 reference statements)

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“…Using dimensional analysis this implies roughly that k < L 4 , where L is the typical length scale of the gravitational system, to be consistent with the perturbative assumption. Proceeding, the Poisson-like equation (16) has the standard integral solution…”

Section: A Metricmentioning

confidence: 99%

“…Consider the current limits on coefficients in the gravity sector. For the coefficients s µν , the best laboratory limits are at the 10 −10 level, with improvements of up to four orders of magnitude in astrophysical tests on these dimensionless coefficients [16]. However, for the mass dimension 6 coefficients (k (6) 1 ) κλµναβ and (k (6) 2 ) κλµναβγδ , the limits are at the 10 −8 m 2 level.…”

Section: Observation and Experimentsmentioning

confidence: 99%

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Anisotropic cubic curvature couplings

Bailey

2016

Phys. Rev. D

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To complement recent work on tests of spacetime symmetry in gravity, cubic curvature couplings are studied using an effective field theory description of spacetime-symmetry breaking. The associated mass dimension 8 coefficients for Lorentz violation studied do not result in any linearized gravity modifications and instead are revealed in the first nonlinear terms in an expansion of spacetime around a flat background. We consider effects on gravitational radiation through the energy loss of a binary system and we study two-body orbital perturbations using the post-Newtonian metric. Some effects depend on the internal structure of the source and test bodies, thereby breaking the Weak Equivalence Principle for self-gravitating bodies. These coefficients can be measured in solar-system tests, while binary-pulsar systems and short-range gravity tests are particularly sensitive.

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Section: A Metricmentioning

confidence: 99%

Section: Observation and Experimentsmentioning

confidence: 99%

Anisotropic cubic curvature couplings

Bailey

2016

Phys. Rev. D

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“…Lorentz violation provides a useful candidate Planck-suppressed effect [1], and the gravitational Standard-Model Extension (SME) provides a field-theory based framework for organizing a systematic search [2,3,15]. While sensitivities to SME coefficients for Lorentz violation have been achieved in a variety of gravitational systems [16][17][18][19][20][21][22][23], including pioneering work with an atom-interferometer gravimeter [16,17], this work provides the first exploration of superconducting gravimeters in the SME framework and the first search for matter-sector Lorentz violation using gravimeters of any kind. Sensitivity improvements over prior gravimeter work [16,17] are achieved for 7 coefficients for Lorentz violation, and the best laboratory sensitivity to 6 coefficients not previously explored in gravimeter experiments is achieved.…”

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confidence: 99%

Superconducting-Gravimeter Tests of Local Lorentz Invariance

2017

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Superconducting-gravimeter measurements are used to test the local Lorentz invariance of the gravitational interaction and of matter-gravity couplings. The best laboratory sensitivities to date are achieved via a maximum-reach analysis for 13 Lorentz-violating operators, with some improvements exceeding an order of magnitude.Local Lorentz invariance is among the foundational building blocks of General Relativity (GR). Though GR provides an impressive description of the wide variety of gravitational phenomena, standard lore holds that GR may be the low-energy limit of an underlying theory that merges gravitation and quantum physics, such as string theory. Local Lorentz violation may arise in such an underlying framework [1]. Hence tests of local Lorentz invariance probe the core construction of GR and may provide clues about the structure of new physics at the quantum-gravity scale. These ideas triggered the development of a comprehensive effective field theory based framework [2,3] for testing Lorentz symmetry used in many modern searches for violations [4].Superconducting gravimeters [5] have generated a vast amount of information about the gravitational field of the Earth. Devices functioning at over 2 dozen locations around the globe generate data at minute intervals for the Global Geodynamics Project (GGP) [6]. In some cases measurements span more than a decade, and sensitivities to local variations in the gravitational field approaching parts in 10 12 can be extracted for variations with periods on the order of a day. Stability at the level of parts in 10 9 per year [5] has also been achieved. Though the primary use of the data is in geophysical applications, the nature of the data clearly also depends on the foundational theories of physics. Hence these data sets provide opportunities to test fundamental physics [7,8]. The search for preferred frame effects in gravitational physics, a particular Lorentz-symmetry violating scenario, was perhaps the first application of superconducting gravimeters to tests of foundational theory [9].In the 4 decades since those early tests, interest in Lorentz violation has surged [10], as have theoretical and experimental developments [11][12][13]. In addition to the search for preferred frame effects as a signal of alternatives to GR [14], more general types of Lorentz violation are now actively sought as a possible signal of new physics at the Planck scale [4]. Though performing Planck-scale experiments directly will likely remain infeasible for the foreseeable future, experimental information about the nature of the underlying theory can be attained by searching for tiny Planck-suppressed effects in experiments at presently accessible energies. Lorentz violation provides a useful candidate Planck-suppressed effect [1], and the gravitational Standard-Model Extension (SME) provides a field-theory based framework for organizing a systematic search [2,3,15]. While sensitivities to SME coefficients for Lorentz violation have been achieved in a variety of gravitational systems...

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“…For LLI violation in matter-gravity couplings, the best current constraints are obtained at 10 −11 GeV [19]. For LLI violation in the pure-gravity part, the experimental classification falls into three parts: experiments on ground [21], solar system [22], and astrophysical measurements [23,24], in which the different limits for different mass dimensions of LLI violation effects are given. For mass dimension d = 4, the best constraints for violating coefficients are obtained at 10 −12 [22] in solar system.…”

Section: Introductionmentioning

confidence: 99%

Experimental Design for Testing Local Lorentz Invariance Violations in Gravity

2017

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Local Lorentz invariance is an important component of General Relativity. Testing for Local Lorentz invariance can not only probe the foundation stone of General Relativity but also help to explore the unified theory for General Relativity and quantum mechanics. In this paper, we search the Local Lorentz invariance violation associated with operators of mass dimension d = 6 in the pure-gravity sector with short-range gravitational experiments. To enlarge the Local Lorentz invariance violation signal effectively, we design a new experiment in which the constraints of all fourteen violation coefficients may be improved by about one order of magnitude.

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Constraints on Lorentz violation from gravitational Čerenkov radiation

Cited by 123 publications

References 95 publications

Anisotropic cubic curvature couplings

Anisotropic cubic curvature couplings

Superconducting-Gravimeter Tests of Local Lorentz Invariance

Experimental Design for Testing Local Lorentz Invariance Violations in Gravity

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