Corrigendum: Generalized ghost-free quadratic curvature gravity (2014
                    <i>Class. Quantum Grav.</i>
                    <b>31</b>
                    015022)

Biswas, Tirthabir; Conroy, Aindriú; Koshelev, Alexey S.; Mazumdar, Anupam

doi:10.1088/0264-9381/31/15/159501

Cited by 78 publications

(76 citation statements)

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“…8 This point has been stressed repeatedly by Tomboulis [16,27], and also by Biswas [28]. 9 If I were working with Weyl term instead of Riemann, the constraint a(−k 2 ) = c(−k 2 ) would lead to following constraint: 6F 1 (¯ ) + 3F 2 (¯ ) + 2F 3 (¯ ) = 0, see [19]. Now, along with Eqs.…”

Section: Graviton Propagator and Ghost Free Actionmentioning

confidence: 89%

“…The only difference will be and addition contribution from cosmological constant ±Λ. One can also recast the action in terms of S µν = R µν − (1/4)g µν R and the Weyl C µνλ σ instead of R µνλ σ , see [19].…”

Section: Infinite Derivative Gravity (Idg)mentioning

confidence: 99%

“…Is there anyway to constrain them? It has been shown in [18,19] that these form factors are not all independent. In particular, in a Minkowski background one can show that to preserve general covariance, and the massless nature of a graviton would require [18,20]:…”

Section: Infinite Derivative Gravity (Idg)mentioning

confidence: 99%

“…Now, along with Eqs. (2.7, 2.10) and the above constraint, the IDG action can be written as [18,19]:…”

Section: Graviton Propagator and Ghost Free Actionmentioning

confidence: 99%

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Infinite derivative gravity: non-singular cosmology & blackhole solutions

Mazumdar

2017

Proceedings of Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2016)

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Both Einstein?s theory of General Relativity and Newton?s theory of gravity possess a short distance and small time scale catastrophe. The blackhole singularity and cosmological Big Bang singularity problems highlight that current theories of gravity are incomplete description at early times and small distances. I will discuss how one can potentially resolve these fundamental problems at a classical level and quantum level. In particular, I will discuss infinite derivative theories of gravity, where gravitational interactions become weaker in the ultraviolet, and therefore resolving some of the classical singularities, such as Big Bang and Schwarzschild singularity for compact non-singular objects with mass up to 10 25 grams. In this lecture, I will discuss quantum aspects of infinite derivative gravity and discuss few aspects which can make the theory asymptotically free in the UV.

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Section: Graviton Propagator and Ghost Free Actionmentioning

confidence: 89%

Section: Infinite Derivative Gravity (Idg)mentioning

confidence: 99%

Section: Infinite Derivative Gravity (Idg)mentioning

confidence: 99%

“…Now, along with Eqs. (2.7, 2.10) and the above constraint, the IDG action can be written as [18,19]:…”

Section: Graviton Propagator and Ghost Free Actionmentioning

confidence: 99%

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Infinite derivative gravity: non-singular cosmology & blackhole solutions

Mazumdar

2017

Proceedings of Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2016)

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“…The most general torsion-free, parity-invariant and quadratic covariant action that contains an infinite number of derivatives has been constructed around constant curvature backgrounds, and reads [5,[21][22][23]:…”

Section: Infinite Derivative Ghost-free and Singularity-free Gravitymentioning

confidence: 99%

Quantum spreading of a self-gravitating wave-packet in singularity free gravity

2018

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In this paper we will study for the first time how the wave-packet of a self-gravitating meso-scopic system spreads in theories beyond Einstein's general relativity. In particular, we will consider a ghost-free infinite derivative gravity, which resolves the 1/r singularity in the potential -such that the gradient of the potential vanishes within the scale of non-locality. We will show that a quantum wavepacket spreads faster for a ghost-free and singularity-free gravity as compared to the Newtonian case, therefore providing us a unique scenario for testing classical and quantum properties of short-distance gravity in a laboratory in the near future.

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Cosmology of Quantum Gravities

Calcagni

2017

Classical and Quantum Cosmology

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Corrigendum: Generalized ghost-free quadratic curvature gravity (2014 Class. Quantum Grav. 31 015022)

Cited by 78 publications

References 0 publications

Infinite derivative gravity: non-singular cosmology & blackhole solutions

Infinite derivative gravity: non-singular cosmology & blackhole solutions

Quantum spreading of a self-gravitating wave-packet in singularity free gravity

Cosmology of Quantum Gravities

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