Results 41 to 50 of about 683,210 (331)

Rescaled Perturbation Theory

, 2010
A non-perturbative method which can go beyond the weak coupling perturbation theory is introduced. Essential idea is to formulate a set of exact differential equations as a function of the coupling strength $g$.
Hayata, Tomoya
core   +1 more source

Dimensional continuation without perturbation theory [PDF]

, 1995
A formula is proposed for continuing physical correlation functions to non-integer numbers of dimensions, expressing them as infinite weighted sums over the same correlation functions in arbitrary integer dimensions.
Periwal, Vipul
core   +3 more sources

On some bounds on the perturbation of invariant subspaces of normal matrices with application to a graph connection problem

Journal of Inequalities and Applications, 2022
We provide upper bounds on the perturbation of invariant subspaces of normal matrices measured using a metric on the space of vector subspaces of C n $\mathbb{C}^{n}$ in terms of the spectrum of both unperturbed and perturbed matrices as well as the ...
Subhrajit Bhattacharya
doaj   +1 more source

Hamiltonian Cosmological Perturbation Theory

, 2005
The Hamiltonian approach to cosmological perturbations in general relativity in finite space-time is developed, where a cosmological scale factor is identified with spatial averaging the metric determinant logarithm.
A.F. Zakharov, Arnowitt, B.M. Barbashov, Bajan, Bardeen, Behnke, Blaschke, Dirac, Dirac, Esposito-Farese, Fock, Kuchar, Lifshitz, Mukhanov, Pawlowski, Perlmutter, Riess, Riess, V.A. Zinchuk, V.N. Pervushin, Weinberg, York, Zelmanov, Zelmanov   +23 more
core   +1 more source

Linearisation with Cosmological Perturbation Theory [PDF]

, 2012
We propose a new method to linearise cosmological mass density fields using higher order Lagrangian perturbation theory (LPT). We demonstrate that a given density field can be expressed as the sum of a linear and a nonlinear component which are tightly ...
Angulo, Angulo, Bernardeau, Blake, Blake, Bouchet, Branchini, Buchert, Cole, Coles, Eisenstein, Eisenstein, Falck, Francisco-Shu Kitaura, Gramann, Hütsi, Joachimi, Kitaura, Kitaura, Kitaura, Kitaura, Lavaux, Matarrese, Mehta, Monaco, Neyrinck, Neyrinck, Noh, Nusser, Nusser, Nusser, Peebles, Percival, Raul E. Angulo, Rimes, Rimes, Scoccimarro, Springel, Weinberg, Yu, Zhang   +40 more
core   +1 more source

The MedSupport Multilevel Intervention to Enhance Support for Pediatric Medication Adherence: Development and Feasibility Testing

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction We developed MedSupport, a multilevel medication adherence intervention designed to address root barriers to medication adherence. This study sought to explore the feasibility and acceptability of the MedSupport intervention strategies to support a future full‐scale randomized controlled trial.
Elizabeth G. Bouchard, Hital Patel, Paula C. Vincent, Justine Kahn, Kira Bona, Thai Hoa Tran, Elisa M. Rodriguez, Kristopher Attwood, Kara M. Kelly   +8 more
wiley   +1 more source

Perturbation Theory for Abstract Volterra Equations

Abstract and Applied Analysis, 2013
We consider additive perturbation theorems for subgenerators of (a, k)-regularized C-resolvent families. A major part of our research is devoted to the study of perturbation properties of abstract time-fractional equations, primarily from their ...
Marko Kostić
doaj   +1 more source

BPS multi-vortices in chiral perturbation theory [PDF]

EPJ Web of Conferences
We show that a BPS bound can be derived from chiral perturbation theory minimally coupled to electrodynamics at a finite isospin chemical potential.
Vera Aldo
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Four-Dimensional Spin Foam Perturbation Theory

Symmetry, Integrability and Geometry: Methods and Applications, 2011
We define a four-dimensional spin-foam perturbation theory for the BF-theory with a B∧B potential term defined for a compact semi-simple Lie group G on a compact orientable 4-manifold M.
João Faria Martins, Aleksandar Mikovic
doaj   +1 more source