Articles with "energy conditions" as a keyword



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Wave transformation across a macrotidal shore platform under low to moderate energy conditions

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Published in 2018 at "Earth Surface Processes and Landforms"

DOI: 10.1002/esp.4245

Abstract: We investigate how waves are transformed across a shore platform as this is a central question in rock coast geomorphology. We present results from deployment of three pressure transducers over four days, across a sloping,… read more here.

Keywords: energy; low moderate; shore platform; energy conditions ... See more keywords
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Energy conditions in modified f(G) gravity

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Published in 2017 at "General Relativity and Gravitation"

DOI: 10.1007/s10714-017-2276-x

Abstract: In this paper, we have considered flat Friedmann–Lemaître–Robertson–Walker metric in the framework of perfect fluid models and modified f(G) gravity (where G is the Gauss Bonnet invariant). Particularly, we have considered particular realistic f(G) configurations… read more here.

Keywords: conditions modified; energy conditions; modified gravity;
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Regular interior solutions to the solution of Kerr which satisfy the weak and the strong energy conditions

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Published in 2022 at "Journal of Mathematical Physics"

DOI: 10.1063/5.0080367

Abstract: The line element of a class of solutions which match to the solution of Kerr on an oblate spheroid if the two functions F (r) and H(r) on which it depends satisfy certain matching conditions… read more here.

Keywords: energy; strong energy; solution kerr; regular interior ... See more keywords
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Energy conditions allow eternal inflation

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Published in 2020 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2021/03/097

Abstract: Eternal inflation requires upward fluctuations of the energy in a Hubble volume, which appear to violate the energy conditions. In particular, a scalar field in an inflating spacetime should obey the averaged null energy condition,… read more here.

Keywords: energy; conditions allow; energy conditions; allow eternal ... See more keywords
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Energy conditions in the new model of loop quantum cosmology

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Published in 2021 at "Chinese Physics C"

DOI: 10.1088/1674-1137/ac1e83

Abstract: Recently, a de-Sitter epoch has been found in the new model of loop quantum cosmology, which is governed by the scalar constraint with both Euclidean and Lorentz terms. The singularity free bounce in the new… read more here.

Keywords: new model; energy; cosmology; energy conditions ... See more keywords
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Energy conditions for a T2 wormhole at the center

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Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.100.084008

Abstract: Within general relativity, we determine the conditions needed for the existence of a toroidal ${T}^{2}$ wormhole. For this purpose, we employ the requirements of the positiveness of the second derivatives of the relevant components of… read more here.

Keywords: conditions wormhole; energy conditions; wormhole center; energy ... See more keywords
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Regular multihorizon black holes in general relativity

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Published in 2020 at "Physical Review D"

DOI: 10.1103/physrevd.102.084038

Abstract: In this work, new solutions for regular black holes that have multihorizons are proposed. These are formed by the direct product of solutions already published in the literature, which are described through the coupling of… read more here.

Keywords: energy conditions; black holes; ratio; satisfy energy ... See more keywords
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Local Quantum Energy Conditions in Non-Lorentz-Invariant Quantum Field Theories.

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Published in 2019 at "Physical review letters"

DOI: 10.1103/physrevlett.123.121602

Abstract: We provide the first example of local quantum energy conditions in quantum field theories that are not Lorentz invariant. We focus on field theories in two dimensions with infinite-dimensional symmetries, like the ones governed by… read more here.

Keywords: field theories; energy conditions; local quantum; energy ... See more keywords
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Regular Bouncing Solutions, Energy Conditions, and the Brans—Dicke Theory

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Published in 2019 at "JETP Letters"

DOI: 10.1134/s0021364019200013

Abstract: In general, to avoid a singularity in cosmological models involves the introduction of exotic kind of matter fields, for example, a scalar field with negative energy density. In order to have a bouncing solution in… read more here.

Keywords: energy conditions; dicke theory; bouncing solutions; regular bouncing ... See more keywords
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Bounds on higher derivative f(R,□R,T) models from energy conditions

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Published in 2019 at "Modern Physics Letters A"

DOI: 10.1142/s0217732319500822

Abstract: This paper studies the viable regions of some cosmic models in a higher derivative [Formula: see text] theory with the help of energy conditions (where [Formula: see text], [Formula: see text] and [Formula: see text]… read more here.

Keywords: bounds higher; energy conditions; higher derivative; energy ... See more keywords
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Non violation of energy conditions in wormholes modeling

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Published in 2019 at "Modern Physics Letters A"

DOI: 10.1142/s0217732319502262

Abstract: Morris and Thorne [M. S. Morris and K. S. Thorne, Am. J. Phys. 56, 395 (1988)] proposed geometrical objects called traversable wormholes that act as bridges in connecting two spacetimes or two different points of… read more here.

Keywords: energy conditions; see text; text formula; formula see ... See more keywords