Results 1 to 10 of about 1,205 (69)
On new characterization of inextensible flows of space-like curves in de Sitter space
Open Mathematics, 2016 Elastica and inextensible flows of curves play an important role in practical applications. In this paper, we construct a new characterization of inextensible flows by using elastica in space.
Yeneroğlu Mustafa
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Asymptotic States and S-Matrix Operator in de Sitter Ambient Space Formalism
Universe, 2023 Within the de Sitter ambient space framework, the two different bases of the one-particle Hilbert space of the de Sitter group algebra are presented for the scalar case.
Mohammad Vahid Takook +2 more
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Obstacles to constructing de Sitter space in string theory
Journal of High Energy Physics, 2021 There have been many attempts to construct de Sitter space-times in string theory. While arguably there have been some successes, this has proven challenging, leading to the de Sitter swampland conjecture: quantum theories of gravity do not admit stable ...
Michael Dine +4 more
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Spiky strings in de Sitter space
Journal of High Energy Physics, 2021 We study semiclassical spiky strings in de Sitter space and the corresponding Regge trajectories, generalizing the analysis in anti-de Sitter space. In particular we demonstrate that each Regge trajectory has a maximum spin due to de Sitter acceleration,
Mitsuhiro Kato +4 more
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Some characterizations of timelike rectifying curves in de sitter 3 space
Cumhuriyet Science Journal, 2020 De Sitter space is a non-flat Lorentzian space form with positive constant curvature which plays an important role in the theory of relativity. In this paper, we define the notions of timelike rectifying curve and timelike conical surface in De Sitter 3 ...
Mahmut Mak
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Microscopics of de Sitter Entropy from Precision Holography
Physical Review X, 2023 We calculate quantum corrections to the entropy of four-dimensional de Sitter space induced by higher-derivative terms in the gravitational action and by one-loop effects.
Nikolay Bobev +4 more
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Back(reaction) to the future in the Unruh-de Sitter state
Journal of High Energy Physics, 2019 Motivated by black hole physics, we define the Unruh state for a scalar field in de Sitter space. Like the Bunch-Davies state, the Unruh-de Sitter state appears thermal to a static observer.
Lars Aalsma +2 more
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Holography in de Sitter and anti-de Sitter spaces and Gel'fand Graev Radon transform
Physics Letters B, 2019 Bulk reconstruction formulas similar to HKLL are obtained for de Sitter and anti-de Sitter spaces as the inverse Gel'fand Graev Radon transform. While these generalize our previous result on the Euclidean anti-de Sitter space, their validity in here is ...
Samrat Bhowmick +2 more
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Generation of genuine tripartite entanglement for continuous variables in de Sitter space
Physics Letters B, 2020 We study the distribution of quantum entanglement for continuous variables among causally disconnected open charts in de Sitter space. It is found that genuine tripartite entanglement is generated among the open chart modes under the influence of ...
Jieci Wang +3 more
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Chaos and complementarity in de Sitter space
Journal of High Energy Physics, 2020 We consider small perturbations to a static three-dimensional de Sitter geometry. For early enough perturbations that satisfy the null energy condition, the result is a shockwave geometry that leads to a time advance in the trajectory of geodesics ...
Lars Aalsma, Gary Shiu
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