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The relevance of parity and time reversal (PT)-symmetric structures in optical systems is known for sometime with the correspondence existing between the Schrodinger equation and the paraxial equation of diffraction where the time parameter…

量子物理 · 物理学 2014-01-21 Bijan Bagchi , Subhrajit Modak , Prasanta K. Panigrahi

This paper is devoted to a deeper understanding of the heat flow and to the refinement of calculus tools on metric measure spaces (X,d,m). Our main results are: - A general study of the relations between the Hopf-Lax semigroup and…

度量几何 · 数学 2014-09-16 Luigi Ambrosio , Nicola Gigli , Giuseppe Savaré

Generalized symmetries and their spontaneous breakdown serve as the fundamental concept to constrain the many-body entanglement structure, which allows us to characterize quantum phases of matter and emergent collective excitations. For…

高能物理 - 理论 · 物理学 2024-12-02 Ki-Seok Kim , Arpita Mitra , Debangshu Mukherjee , Mitsuhiro Nishida

There are three approaches to currents tuned to the anisotropic geometry of Heisenberg groups: Ambrosio and Kirchheim's approach valid for general metric spaces; distributions dual to horizontal differential forms; distributions dual to…

度量几何 · 数学 2025-12-08 Bruno Franchi , Pierre Pansu

This is the second paper of a series on configuration spaces $\Upsilon$ over singular spaces $X$. Here, we focus on geometric aspects of the extended metric measure space $(\Upsilon, \mathsf{d}_{\Upsilon}, \mu)$ equipped with the…

度量几何 · 数学 2022-05-04 Lorenzo Dello Schiavo , Kohei Suzuki

A gas of self-avoiding surfaces with an arbitrary polynomial coupling to the gaussian curvature and an extrinsic curvature term can be realized in a three-dimensional Ising bcc lattice with only three local couplings. Similar three…

高能物理 - 格点 · 物理学 2009-10-22 M. Caselle , F. Gliozzi , S. Vinti

The equivariant Gromov--Hausdorff convergence of metric spaces is studied. Where all isometry groups under consideration are compact Lie, it is shown that an upper bound on the dimension of the group guarantees that the convergence is by…

度量几何 · 数学 2020-01-23 John Harvey

In this work we construct a sequence of Riemannian metrics on the three-sphere with scalar curvature greater than or equal to $6$ and arbitrarily large widths. Our procedure is based on the connected sum construction of positive scalar…

微分几何 · 数学 2015-03-10 Rafael Montezuma

The abstract theory of self-adjoint extensions of symmetric operators is used to construct self-adjoint realizations of a second-order elliptic operator on $\mathbb{R}^{n}$ with linear boundary conditions on (a relatively open part of) a…

偏微分方程分析 · 数学 2016-04-12 A. Mantile , A. Posilicano , M. Sini

We investigate the interaction between systolic geometry and positive scalar curvature through spinorial methods. Our main theorem establishes an upper bound for the two-dimensional stable systole on certain high-dimensional manifolds with…

微分几何 · 数学 2025-09-30 Shunichiro Orikasa

We study left-invariant distances on Lie groups for which there exists a one-parameter family of homothetic automorphisms. The main examples are Carnot groups, in particular the Heisenberg group with the standard dilations. We are…

度量几何 · 数学 2015-09-15 Enrico Le Donne , Sebastiano Nicolussi Golo

We consider the Generalized Gibbs ensemble of the Ablowitz-Ladik lattice, and the Schur flow. We derive large deviations principles for the distribution of the empirical measures of the equilibrium measures for these ensembles. As a…

概率论 · 数学 2023-06-22 Guido Mazzuca , Ronan Memin

We introduce symmetric Poisson structures as pairs consisting of a symmetric bivector field and a torsion-free connection satisfying an integrability condition analogous to that in usual Poisson geometry. Equivalent conditions in Poisson…

微分几何 · 数学 2026-01-07 Filip Moučka , Roberto Rubio

We continue the study of the analogue of Thurston's metric on the Teichm{\"u}ller space of Euclidean triangle which was started by Saglam and Papadopoulos in [1].By direct calculation, we give explicit expressions of the distance function…

几何拓扑 · 数学 2023-08-28 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

Our monograph presents the foundations of the theory of groups and semigroups acting isometrically on Gromov hyperbolic metric spaces. Our work unifies and extends a long list of results by many authors. We make it a point to avoid any…

动力系统 · 数学 2018-11-22 Tushar Das , David Simmons , Mariusz Urbański

We study the geometry of Outer Space $CV_n$ in regard of the asymmetric Lipschitz metric via envelopes, that is the set of all geodesics between two points. In the simplicial structure of $CV_n$ the envelopes are polytopes. We construct a…

几何拓扑 · 数学 2019-07-16 Christian Steinhart

Part I of this series (arXiv:2602.09029) develops a sharp Gaussian (LAN/GDP) limit theory for neighboring shuffle experiments when the local randomizer is fixed and has full support bounded away from zero. The present paper characterizes…

统计理论 · 数学 2026-03-12 Alex Shvets

We present an analysis of the symmetries of the interference pattern of critical currents through a two-dimensional superconductor-semiconductor-superconductor junction, taking into account Rashba and Dresselhaus spin-orbit interaction, an…

介观与纳米尺度物理 · 物理学 2016-04-13 Asbjørn Rasmussen , Jeroen Danon , Henri Suominen , Fabrizio Nichele , Morten Kjaergaard , Karsten Flensberg

The group structure of the variant chiral symmetry discovered by Luscher in the Ginsparg-Wilson description of lattice chiral fermions is analyzed. It is shown that the group contains an infinite number of linearly independent symmetry…

高能物理 - 格点 · 物理学 2011-11-10 Jeffrey E. Mandula

We investigate the fate of asymptotic simplicity in physically relevant settings of compact-object scattering. Using the stress tensor of a two-body system as a source, we compute the spacetime metric in General Relativity at finite…

高能物理 - 理论 · 物理学 2026-03-13 Stefano De Angelis , Aidan Herderschee , Radu Roiban , Fei Teng