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We compute the Brown-Peterson cohomology of QX, the free infinite loop-space on X, when X is a space whose Morava K-theory is flat over its BP-cohomology, in particular a space whose Morava K-theory is concentrated in even degrees. Our…

Algebraic Topology · Mathematics 2007-05-23 Takuji Kashiwabara

We find the analytic expression of the trace of powers of the reduced density matrix on an interval of length L, for a massive boson field in 1+1 dimensions. This is given exactly (except for a non universal factor) in terms of a finite sum…

Other Condensed Matter · Physics 2011-02-16 H. Casini , M. Huerta

We show that the associative algebra structure can be incorporated in the BRST quantization formalism for gauge theories such that extension from the corresponding Lie algebra to the associative algebra is achieved using operator…

Quantum Algebra · Mathematics 2007-05-23 I. A. Batalin , A. M. Semikhatov

We derive the absolutely anticommuting (anti-)dual-BRST symmetry transformations for the appropriate Lagrangian densities of the (3 + 1)-dimensional (4D) free Abelian 2-form gauge theory, under which, the total gauge-fixing term remains…

High Energy Physics - Theory · Physics 2008-12-18 R. P. Malik

The article presents an algebra to represent two dimensional patterns using reciprocals of polynomials. Such a representation will be useful in neural network training and it provides a method of training patterns that is much more…

Information Theory · Computer Science 2011-02-23 Subhash Kak

We derive a graph expansion for the thermal partition function of solvable two-dimensional models with boundaries. This expansion of the integration measure over the virtual particles winding around the time cycle is obtained with the help…

High Energy Physics - Theory · Physics 2020-01-08 Ivan Kostov , Didina Serban , Dinh-Long Vu

An algebraic criterion, in terms of closure under power operations, is determined for the existence and uniqueness of generalized trun- cated Brown-Peterson spectra of height 2 as E_\infty-ring spectra. The criterion is checked for an…

Algebraic Topology · Mathematics 2014-02-26 Tyler Lawson , Niko Naumann

We study the decomposition of central simple algebras of exponent 2 into tensor products of quaternion algebras. We consider in particular decompositions in which one of the quaternion algebras contains a given quadratic extension. Let $B$…

Rings and Algebras · Mathematics 2013-04-10 Demba Barry

A particular dispersive generalization of long water wave equation in $1+1$ dimensions, which is important in the study of matrix models without scaling limit, known as two--Boson (TB) equation, as well as the associated hierarchy has been…

High Energy Physics - Theory · Physics 2015-06-26 Ashok Das , Shibaji Roy

Inspired by so many possible applications of this class of problems, we seek solution for non-cooperative elliptic systems of two Schrodinger equations. General conditions are assumed under the potentials, which produces convenient…

Analysis of PDEs · Mathematics 2018-11-01 Liliane A. Maia , Mayra Soares , Ricardo Ruviaro

We find out some relations between the classical Adams spectral sequences for stunted real projective spectra, the Borel $C_2$-equivariant Adams spectral sequence for the 2-completed sphere, and the genuine $C_2$-equivariant Adams spectral…

Algebraic Topology · Mathematics 2025-09-24 Sihao Ma

Using methods developed by Franke, we obtain algebraic classification results for modules over certain symmetric ring spectra ($S$-algebras). In particular, for any symmetric ring spectrum $R$ whose graded homotopy ring $\pi_*R$ has graded…

Algebraic Topology · Mathematics 2014-10-01 Irakli Patchkoria

In this work we investigate the possibility of using the reflection algebra as a source of functional equations. More precisely, we obtain functional relations determining the partition function of the six-vertex model with domain-wall…

Mathematical Physics · Physics 2017-05-17 W. Galleas , J. Lamers

We determine the Jordan-Holder decomposition multiplicities of projective and cell modules over periplectic Brauer algebras in characteristic zero. These are obtained by developing the combinatorics of certain skew Young diagrams. We also…

Representation Theory · Mathematics 2018-02-20 Kevin Coulembier , Michael Ehrig

Let $m, n\in{\mathbb N}$. In this paper we study the right permutation action of the symmetric group ${\mathfrak S}_{2n}$ on the set of all the Brauer $n$-diagrams. A new basis for the free ${\mathbb Z}$-module ${\mathfrak B}_n$ spanned by…

Representation Theory · Mathematics 2007-05-23 Jun Hu

We propose a simple approach to formal deformations of associative algebras. It exploits the machinery of multiplicative coresolutions of an associative algebra A in the category of A-bimodules. Specifically, we show that certain…

Mathematical Physics · Physics 2018-08-15 Alexey A. Sharapov , Evgeny D. Skvortsov

We address the many-atom emission of a dilute cloud of two-level atoms through a renormalized perturbation theory. An analytical solution for the truncated coupled-dipole equations is derived, which contains an effective spectrum associated…

We investigate cooperative fluorescence in a dilute cloud of strongly driven two-level emitters. Starting from the Heisenberg equations of motion, we compute the first-order scattering corrections to the saturation of the excited-state…

Atomic Physics · Physics 2013-06-06 J. R. Ott , M. Wubs , P. Lodahl , N. A. Mortensen , R. Kaiser

We introduce the notion of brick-splitting torsion pairs as a modern analogue and generalization of the classical notion of splitting torsion pairs. A torsion pair is called brick-splitting if any given brick is either torsion or…

Representation Theory · Mathematics 2025-08-28 Sota Asai , Osamu Iyama , Kaveh Mousavand , Charles Paquette

We derive equations for evaluating differential operators in transparent boundary conditions (TBCs) for a certain class of hyperbolic systems of second-order equations. This local part of TBCs can be used as approximate nonreflecting…

Numerical Analysis · Mathematics 2016-09-30 Ivan Sofronov