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We investigate the properties of a fairly large class of boundary conditions for the linearised Einstein equations in the Riemannian setting, ones which generalise the linearised counterpart of boundary conditions proposed by Anderson.…

Analysis of PDEs · Mathematics 2024-07-11 Matteo Capoferri , Simone Murro , Gabriel Schmid

Aim of this paper is to provide new characterizations of the curvature dimension condition in the context of metric measure spaces (X,d,m). On the geometric side, our new approach takes into account suitable weighted action functionals…

Analysis of PDEs · Mathematics 2020-02-12 Luigi Ambrosio , Andrea Mondino , Giuseppe Savaré

This paper is concerned with uniform measure estimates for nodal sets of solutions in elliptic homogenization. We consider a family of second-order elliptic operators $\{ \mathcal{L}_\e\}$ in divergence form with rapidly oscillating and…

Analysis of PDEs · Mathematics 2018-05-25 Fanghua Lin , Zhongwei Shen

We present exact solutions of the Schr\"odinger equation for a quantum system with complex mass subjected to a complex Morse potential in the extended complex phase space. The normalized eigenfunctions and corresponding eigenspectra are…

Quantum Physics · Physics 2025-12-24 Partha Sarathi , Bhaskar Singh Rawat

In this paper, we consider a class of quasilinear stationary Kirchhoff type potential systems with Neumann Boundary conditions, which involves a general variable exponent elliptic operator with critical growth. Under some suitable…

Analysis of PDEs · Mathematics 2022-03-24 Nabil Chems Eddine , Maria Alessandra Ragusa

We derive an exact uncertainty relation for arbitrary quantum states of finite-dimensional Hilbert spaces. For any given $k$-partition of a $d$-dimensional multipartite system, we introduce the total uncertainty as the sum of the…

Quantum Physics · Physics 2026-03-19 G. Tartaglione , G. Zanfardino , F. Illuminati

For N=1 supergravity in 3+1 dimensions we determine the graded algebra of the quantized Lorentz generators, supersymmetry generators, and diffeo-morphism and Hamiltonian generators and find that, at least formally, it closes in the chosen…

General Relativity and Quantum Cosmology · Physics 2010-01-08 Andras Csordas , Robert Graham

Increasing tensor powers of the $k\times k$ matrices $M_k({\mathbb{C}})$ are known to give rise to a continuous bundle of $C^*$-algebras over $I=\{0\}\cup 1/\mathbb{N}\subset[0,1]$ with fibers $A_{1/N}=M_k({\mathbb{C}})^{\otimes N}$ and…

Mathematical Physics · Physics 2020-04-21 Klaas Landsman , Valter Moretti , Christiaan J. F. van de Ven

We propose an analytical approach for computing the eigenspectrum and corresponding eigenstates of a hyperbolic double well potential of arbitrary height or width, which goes beyond the usual techniques applied to quasi-exactly solvable…

Quantum Physics · Physics 2021-01-01 D. Kufel , H. Chomet , C. Figueira de Morisson Faria

The quantum conditions of the relativistic integrable systems whose classical motion is multiply periodic are given by considering the single-valuedness of the linear superposition of the approximate solutions $R_{i}\exp {\{iS_{i}/\hbar…

Quantum Physics · Physics 2007-05-23 De-Hone Lin

In this paper we take up the quantal two-centre problem where the Coulomb centres have arbitrary positive charges. In analogy with the symmetric case, treated in the second paper of this series of papers, we use the knowledge on the…

Exactly Solvable and Integrable Systems · Physics 2015-06-26 N. Athavan , N. Fröman , M. Lakshmanan

We construct models of exactly solvable two-particle quantum graphs with certain non-local two-particle interactions, establishing appropriate boundary conditions via suitable self-adjoint realisations of the two-particle Laplacian. Showing…

Mathematical Physics · Physics 2017-02-20 Jens Bolte , George Garforth

We demonstrate that the symmetric elliptic polynomials $E_\lambda(x)$ originally discovered in the study of generalized Noumi-Shiraishi functions are eigenfunctions of the elliptic Ruijsenaars-Schneider (eRS) Hamiltonians that act on the…

High Energy Physics - Theory · Physics 2021-06-01 A. Mironov , A. Morozov , Y. Zenkevich

We present a simplified derivation of the relativistic three-particle quantization condition for identical, spinless particles described by a generic relativistic field theory satisfying a $\mathbb Z_2$ symmetry. The simplification is…

High Energy Physics - Lattice · Physics 2020-10-07 Tyler D. Blanton , Stephen R. Sharpe

We consider a self-gravitating system containing a globally timelike Killing vector and a nonlinear Born-Infeld electromagnetic field and scalar fields. We prove that under certain boundary conditions (asymptotically flat/AdS) there can't…

General Relativity and Quantum Cosmology · Physics 2014-07-22 Li-Ming Cao , Yuxuan Peng , Jianfei Xu

We study a class of design problems in solid mechanics, leading to a variation on the classical question of equi-dimensional embeddability of Riemannian manifolds. In this general new context, we derive a necessary and sufficient existence…

Analysis of PDEs · Mathematics 2016-04-13 Amit Acharya , Marta Lewicka , Mohammad Reza Pakzad

The quantum Cram\'er-Rao (QCR) bound sets the ultimate local precision limit for unbiased multiparameter estimation. Yet, unlike in the single-parameter case, its saturability is not generally guaranteed and is often assessed through…

Quantum Physics · Physics 2026-02-13 Satoya Imai , Jing Yang , Luca Pezzè

We consider the problem of the motion of $N$ bodies in a self-gravitating system in two spacetime dimensions. We point out that this system can be mapped onto the quantum-mechanical problem of an N-body generalization of the problem of the…

General Relativity and Quantum Cosmology · Physics 2008-11-26 P. S. Farrugia , R. B. Mann , T. C. Scott

We consider the self-dual Chern-Simons-Schr\"odinger model in two spatial dimensions. This problem is $L^2$-critical. Under equivariant setting, global wellposedness and scattering were proved in [Liu-Smith, 2016] for solution with initial…

Analysis of PDEs · Mathematics 2020-12-08 Zexing Li , Baoping Liu

The two-dimensional self-dual Chern-Simons equations are equivalent to the conditions for static, zero-energy vortex-like solutions of the (2+1) dimensional gauged nonlinear Schr\"odinger equation with Chern-Simons matter-gauge coupling.…

High Energy Physics - Theory · Physics 2007-05-23 Gerald Dunne