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It is suspected that the quantum evolution equations describing the micro-world as we know it are of a special kind that allows transformations to a special set of basis states in Hilbert space, such that, in this basis, the evolution is…

Quantum Physics · Physics 2021-07-30 Gerard t Hooft

Recently, a topological field theory of membrane-matter coupled to BF theory in arbitrary spacetime dimensions was proposed [1]. In this paper, we discuss various aspects of the four-dimensional theory. Firstly, we study classical solutions…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Winston J. Fairbairn , Alejandro Perez

We study the correction of the energy spectrum of a gravitational quantum well due to the combined effect of the braneworld model with infinite extra dimensions and generalized uncertainty principle. The correction terms arise from a…

High Energy Physics - Theory · Physics 2017-07-18 Anha Bhat , Sanjib Dey , Mir Faizal , Chenguang Hou , Qin Zhao

We obtain a refinement of Manin-Mumford (Raynaud's Theorem) for abelian schemes over some ring of integers. Torsion points are replaced by special 0-cycles, that is reductions modulo some, possibly varying, prime of Galois orbits of torsion…

Number Theory · Mathematics 2024-02-28 Gregorio Baldi , Rodolphe Richard , Emmanuel Ullmo

The Schr\"odinger-type formalism of the Klein-Gordon quantum mechanics is adapted for the case of the $SL(2,\R)$ spacetime. The free particle case is solved, the results of a recent work are reproduced while all the other, topologically…

High Energy Physics - Theory · Physics 2009-10-30 T. Fülöp

An analogue of the convergence part of the Khintchine-Groshev theorem, as well as its multiplicative version, is proved for nondegenerate smooth submanifolds in $\mathbb{R}^n$. The proof combines methods from metric number theory with a new…

Number Theory · Mathematics 2007-05-23 V. Bernik , D. Kleinbock , G. A. Margulis

We derive a quantum kinetic theory for QED based on Kadanoff-Baym equations for Wigner functions. By assuming parity invariance and considering a complete set of self-energy diagrams, we find the resulting kinetic theory expanded to lowest…

High Energy Physics - Phenomenology · Physics 2022-05-10 Shu Lin

Lagrangian formulation of quantum mechanical Schr\"odinger equation is developed in general and illustrated in the eigenbasis of the Hamiltonian and in the coordinate representation. The Lagrangian formulation of physically plausible…

Quantum Physics · Physics 2014-05-21 D. Arsenovic , N. Buric , D. M. Davidovic , S. Prvanovic

We present an implementation of the loop representation of quantum gravity on a square lattice. Instead of starting from a classical lattice theory, quantizing and introducing loops, we proceed backwards, setting up constraints in the…

General Relativity and Quantum Cosmology · Physics 2009-10-28 Hugo Fort , Rodolfo Gambini , Jorge Pullin

We provide a universal framework for the quantum simulation of SU(N) Yang--Mills theories on fault-tolerant digital quantum computers adopting the orbifold lattice formulation. As warm-up examples, we also consider simple models, including…

We provide a new short proof for the Birman--Solomyak theorem for Hilbert--Schmidt operators and give an application to a Schr\"odinger--Poisson system.

Mathematical Physics · Physics 2025-11-17 V. Bach , A. F. M. ter Elst , J. Rehberg

Recently, Chamseddine and Mukhanov introduced a higher-derivative scalar-tensor theory which leads to a modified Friedmann equation allowing for bouncing solutions. As we note in the present work, this Friedmann equation turns out to…

General Relativity and Quantum Cosmology · Physics 2017-12-13 David Langlois , Hongguang Liu , Karim Noui , Edward Wilson-Ewing

The Quantum Ergodic Conjecture equates the Wigner function for a typical eigenstate of a classically chaotic Hamiltonian with a delta-function on the energy shell. This ensures the evaluation of classical ergodic expectations of simple…

Quantum Physics · Physics 2015-05-20 E. Zambrano , W. P. Karel Zapfe , Alfredo M. Ozorio de Almeida

The Kalman canonical form for quantum linear systems was derived in \cite{ZGPG18}. The purpose of this paper is to present an alternative derivation by means of a Gramian matrix approach. Controllability and observability Gramian matrices…

Quantum Physics · Physics 2023-12-27 Guofeng Zhang , Jinghao Li , Zhiyuan Dong , Ian R. Petersen

We consider quantum systems which interact strongly with a rapidly varying environment and derive a Schrodinger-like equation which describes the time evolution of the average wave function. We show that the corresponding Hamiltonian can be…

General Physics · Physics 2009-11-07 R. Huerta , J. Wudka

Quantum gravity of a brane-like Universe is formulated, and its Einstein limit is approached. Regge-Teitelboim embedding of Arnowitt-Deser-Misner formalism is carried out. Invoking a novel Lagrange multiplier, accompanying the lapse…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Aharon Davidson , David Karasik

The generalized Schrodinger equation deduced in the earlier papers is compared with conventional constructions of quantum field theory. In particular, it yields the usual Schrodinger equation of quantum field theory written without normal…

Mathematical Physics · Physics 2009-10-18 A. V. Stoyanovsky

Starting on the basis of the non-commutative q-differential calculus, we introduce a generalized q-deformed Schr\"odinger equation. It can be viewed as the quantum stochastic counterpart of a generalized classical kinetic equation, which…

Mathematical Physics · Physics 2009-11-13 A. Lavagno

We review the derivation of quantum theory as an application of entropic methods of inference. The new contribution in this paper is a streamlined derivation of the Schr\"odinger equation based on a different choice of microstates and…

Quantum Physics · Physics 2015-06-19 Ariel Caticha

We define and solve the $\text{U(1)}$ Chern-Simons-Maxwell theory on spacetime lattice, with an emphasis on the chirality of the theory. Realizing Chern-Simons theory on lattice has been a problem of interest for decades, and over the years…

High Energy Physics - Theory · Physics 2025-08-18 Ze-An Xu , Jing-Yuan Chen