Search Results - "Surya, Sumati"

The causal set approach to quantum gravity by Surya, Sumati

“…The causal set theory (CST) approach to quantum gravity postulates that at the most fundamental level, spacetime is discrete, with the spacetime continuum…”
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A spacetime calculation of the Calabrese-Cardy entanglement entropy by Mathur, Abhishek, Surya, Sumati, Nomaan X

“…We calculate Sorkin's spacetime entanglement entropy of a Gaussian scalar field for complementary regions in the 2d cylinder spacetime and show that it has the…”
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Null geodesics from ladder molecules by Bhattacharya, Anish, Mathur, Abhishek, Surya, Sumati

“…We propose a discrete analogue of null geodesics in causal sets that are approximated by M 2 , in the spirit of Kronheimer and Penrose’s ”grids” and ”beams”…”
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Spacetime entanglement entropy: covariance and discreteness by Mathur, Abhishek, Surya, Sumati, Nomaan, X.

“…We review some recent results on Sorkin’s spacetime formulation of the entanglement entropy (SSEE) for a free quantum scalar field both in the continuum and in…”
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Studies on the SJ vacuum in de Sitter spacetime by Surya, Sumati, X, Nomaan, Yazdi, Yasaman K.

“…A bstract In this work we study the Sorkin-Johnston (SJ) vacuum in de Sitter spacetime for free scalar field theory. For the massless theory we find that the…”
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The causal set approach to quantum gravity by Surya, Sumati

“…The causal set theory (CST) approach to quantum gravity postulates that at the most fundamental level, spacetime is discrete, with the spacetime continuum…”
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Sorkin-Johnston vacuum for a massive scalar field in the 2D causal diamond by Mathur, Abhishek, Surya, Sumati

“…Phys. Rev. D 100, 045007 (2019) We study the massive scalar field Sorkin-Johnston (SJ) Wightman function restricted to a flat 2D causal diamond of linear…”
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Phase transitions for flat anti-de Sitter black holes by Surya, S, Schleich, K, Witt, D M

“…We reexamine the thermodynamics of anti-de Sitter (adS) black holes with Ricci flat horizons using the adS soliton as the thermal background. We find that…”
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Null Geodesics from Ladder Molecules by Bhattacharya, Anish, Mathur, Abhishek, Surya, Sumati

“…We propose a discrete analogue of null geodesics in causal sets that are approximated by a region of 2d Minkowski spacetime, in the spirit of Kronheimer and…”
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Spacetime Entanglement Entropy: Covariance and Discreteness by Mathur, Abhishek, Surya, Sumati, X, Nomaan

“…We review some recent results on Sorkin's spacetime formulation of the entanglement entropy (SSEE) for a free quantum scalar field both in the continuum and in…”
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Spacetime Entanglement Entropy of de Sitter and Black Hole Horizons by Mathur, Abhishek, Surya, Sumati, X, Nomaan

“…We calculate Sorkin's manifestly covariant entanglement entropy $\mathcal{S}$ for a massive and massless minimally coupled free Gaussian scalar field for the…”
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A Spacetime Calculation of the Calabrese-Cardy Entanglement Entropy by Mathur, Abhishek, Surya, Sumati, X, Nomaan

“…Physics Letters B. 2021 Aug 8:136567 We calculate Sorkin's spacetime entanglement entropy of a Gaussian scalar field for complementary regions in the 2d…”
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Dimensionally Restricted Causal Set Quantum Gravity: Examples in Two and Three Dimensions by Cunningham, William J, Surya, Sumati

“…We study dimensionally restricted non-perturbative causal set quantum dynamics in $2$ and $3$ spacetime dimensions with non-trivial global spatial topology…”
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Entanglement Entropy of Causal Set de Sitter Horizons by Surya, Sumati, X, Nomaan, Yazdi, Yasaman K

“…Class. Quantum Grav. 38 115001 (2021) de Sitter cosmological horizons are known to exhibit thermodynamic properties similar to black hole horizons. In this…”
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Spectral dimension on spatial hypersurfaces in causal set quantum gravity by Eichhorn, Astrid, Surya, Sumati, Versteegen, Fleur

“…An important probe of quantum geometry is its spectral dimension, defined via a spatial diffusion process. In this work we study the spectral dimension of a…”
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Entropy and the Link Action in the Causal Set Path-Sum by Mathur, Abhishek, Singh, Anup Anand, Surya, Sumati

“…In causal set theory the gravitational path integral is replaced by a path-sum over a sample space $\Omega_n$ of $n$-element causal sets. The contribution from…”
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Induced Spatial Geometry from Causal Structure by Eichhorn, Astrid, Surya, Sumati, Versteegen, Fleur

“…Motivated by the Hawking-King-McCarthy-Malament (HKMM) theorem and the associated reconstruction of spacetime geometry from its causal structure $(M,\prec)$…”
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Scalar Field Green Functions on Causal Sets by X, Nomaan, Dowker, Fay, Surya, Sumati

“…Classical and Quantum Gravity, volume 34, 12, 124002, 2017 We examine the validity and scope of Johnston's models for scalar field retarded Green functions on…”
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Studies on the SJ Vacuum in de Sitter Spacetime by Surya, Sumati, X, Nomaan, Yazdi, Yasaman K

“…JHEP 1907 (2019) 009 In this work we study the Sorkin-Johnston (SJ) vacuum in de Sitter spacetime for free scalar field theory. For the massless theory we find…”
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Causal set topology by Surya, Sumati

“…The Causal Set Theory (CST) approach to quantum gravity is motivated by the observation that, associated with any causal spacetime ( M , g ) is a poset ( M , ≺…”
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