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Dix formulated the inverse problem of recovering an elastic body from the measurements of wave fronts of point sources. We geometrize this problem in the context of seismology, leading to the geometrical inverse problem of recovering a…

微分几何 · 数学 2025-03-14 Maarten V. de Hoop , Joonas Ilmavirta , Matti Lassas

We study the geodesic convexity of various energy and entropy functionals restricted to (non-geodesically convex) submanifolds of Wasserstein spaces with their induced geometry. We prove a variety of convexity results by means of a simple…

偏微分方程分析 · 数学 2025-08-22 Louis-Pierre Chaintron , Daniel Lacker

We study the reflected entropy $S_R$ in the West Coast Model, a toy model of black hole evaporation consisting of JT gravity coupled to end-of-the-world branes. We demonstrate the validity of the holographic duality relating it to the…

高能物理 - 理论 · 物理学 2023-07-18 Chris Akers , Thomas Faulkner , Simon Lin , Pratik Rath

We briefly describe the construction of St\"{a}\-kel-Killing and Killing-Yano tensors on toric Sasaki-Einstein manifolds without working out intricate generalized Killing equations. The integrals of geodesic motions are expressed in terms…

高能物理 - 理论 · 物理学 2016-10-03 Mihai Visinescu

We use the conformal invariance and the holographic correspondence to fully specify the dependence of entanglement entropy on the extrinsic geometry of the 2d surface $\Sigma$ that separates two subsystems of quantum strongly coupled…

高能物理 - 理论 · 物理学 2008-11-26 Sergey N. Solodukhin

Geometric relational embeddings map relational data as geometric objects that combine vector information suitable for machine learning and structured/relational information for structured/relational reasoning, typically in low dimensions.…

人工智能 · 计算机科学 2023-04-25 Bo Xiong , Mojtaba Nayyeri , Ming Jin , Yunjie He , Michael Cochez , Shirui Pan , Steffen Staab

Projective geometry provides the preferred framework for most implementations of Euclidean space in graphics applications. Translations and rotations are both linear transformations in projective geometry, which helps when it comes to…

计算几何 · 计算机科学 2007-05-23 Chris Doran , Anthony Lasenby , Joan Lasenby

The statistical mechanics characterization of a finite subsystem embedded in an infinite system is a fundamental question of quantum physics. Nevertheless, a full closed form { for all required entropic measures} does not exist in the…

量子物理 · 物理学 2022-03-23 Eldad Bettelheim , Aditya Banerjee , Martin B. Plenio , Susana F. Huelga

The paper is devoted to the study of geodesic orbit Riemannian spaces that could be characterize by the property that any geodesic is an orbit of a 1-parameter group of isometries. The main result is the classification of compact simply…

微分几何 · 数学 2020-05-19 Zhiqi Chen , Yu. G. Nikonorov

Several variants of the recently proposed Density Matrix Embedding Theory (DMET) [G. Knizia and G. K-L. Chan, Phys. Rev. Lett. 109, 186404 (2012)] are formulated and tested. We show that spin symmetry breaking of the lattice mean-field…

强关联电子 · 物理学 2015-06-17 Ireneusz W. Bulik , Gustavo E. Scuseria , Jorge Dukelsky

We propose an algebraic geometry-inspired approach for constructing entangled subspaces within the Hilbert space of a multipartite quantum system. Specifically, our method employs a modified Veronese embedding, restricted to the conic, to…

量子物理 · 物理学 2025-12-19 Masoud Gharahi , Stefano Mancini

We examine how to construct a spatial manifold and its geometry from the entanglement structure of an abstract quantum state in Hilbert space. Given a decomposition of Hilbert space $\mathcal{H}$ into a tensor product of factors, we…

高能物理 - 理论 · 物理学 2017-02-01 ChunJun Cao , Sean M. Carroll , Spyridon Michalakis

We study the effect of the choice of embedding geometry on the entropy of random geometric graph ensembles with soft connection functions. First we show that when the connection range is small, the entropy is dependent only on the dimension…

概率论 · 数学 2026-01-22 Oliver Baker , Carl P. Dettmann

We investigate the mixed state entanglement structure through the reflected entropy for disjoint radiation subsystems coupled to a 2d eternal brane world black hole in a time dependent defect AdS$_3$/BCFT$_2$ scenario. Utilizing the island…

高能物理 - 理论 · 物理学 2025-12-19 Ankur Dey , Gautam Sengupta

We obtain entanglement entropy on the noncommutative (fuzzy) two-sphere. To define a subregion with a well defined boundary in this geometry, we use the symbol map between elements of the noncommutative algebra and functions on the sphere.…

高能物理 - 理论 · 物理学 2014-04-02 Joanna L. Karczmarek , Philippe Sabella-Garnier

Causal radial geodesics with a positive interval in the Schwarzschild metric include a subset of trajectories completely confined under a horizon, which compose a thermal statistical ensemble with the Hawking-Gibbons temperature. The…

广义相对论与量子宇宙学 · 物理学 2015-06-25 V. V. Kiselev

Motivated by recent applications to entropy theory in dynamical systems, we generalise notions introduced by Matthews and define weakly weighted and componentwisely weakly weighted (generalised) quasi-metrics. We then systematise and extend…

信息论 · 计算机科学 2022-12-19 Ilaria Castellano , Anna Giordano Bruno , Nicolò Zava

We study the entanglement and Renyi entropies of two disjoint intervals in minimal models of conformal field theory. We use the conformal block expansion and fusion rules of twist fields to define a systematic expansion in the elliptic…

高能物理 - 理论 · 物理学 2015-06-03 M. A. Rajabpour , F. Gliozzi

We continue our study of reflected entropy, $R(A,B)$, for Gaussian systems. In this paper we provide general formulas valid for free scalar fields in arbitrary dimensions. Similarly to the fermionic case, the resulting expressions are fully…

高能物理 - 理论 · 物理学 2020-12-30 Pablo Bueno , Horacio Casini

We study a subsystem of an isolated one-dimensional correlated metal when it is driven by a steady electric field or when it relaxes after driving. We obtain numerically exact reduced density matrix $\rho$ for subsystems which are…

强关联电子 · 物理学 2013-05-21 M. Mierzejewski , T. Prosen , D. Crivelli , P. Prelovsek