Results 61 to 70 of about 417,302 (266)

Canonical quantization of spherically symmetric dust collapse [PDF]

open access: yes, 2011
Quantum gravity effects are likely to play a crucial role in determining the outcome of gravitational collapse during its final stages. In this contribution we will outline a canonical quantization of the LeMaitre-Tolman-Bondi (LTB) models, which ...
C. Vaz, L. Witten
semanticscholar   +1 more source

Wavepacket Evolution in Unimodular Quantum Cosmology

open access: yesGalaxies, 2018
The unimodular theory of gravity admits a canonical quantization of minisuperspace models without the problem of time. We derive instead a kind of Schrödinger equation.
Natascha Riahi
doaj   +1 more source

Supersymmetric backgrounds in (1 + 1) dimensions and inhomogeneous field theory

open access: yesJournal of High Energy Physics, 2023
We find a (1 + 1)-dimensional metric solution for a background hosting various supersymmetric field theories with a single non-chiral real supercharge. This supersymmetric background is globally hyperbolic even though it contains a naked null singularity.
Jeongwon Ho   +3 more
doaj   +1 more source

Analysis of density matrix embedding theory around the non‐interacting limit

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract This article provides the first mathematical analysis of the Density Matrix Embedding Theory (DMET) method. We prove that, under certain assumptions, (i) the exact ground‐state density matrix is a fixed‐point of the DMET map for non‐interacting systems, (ii) there exists a unique physical solution in the weakly‐interacting regime, and (iii ...
Eric Cancès   +4 more
wiley   +1 more source

Canonical Quantization of a Massive Weyl Field [PDF]

open access: yes, 2011
We construct a consistent theory of a quantum massive Weyl field. We start with the formulation of the classical field theory approach for the description of massive Weyl fields.
M. Dvornikov
semanticscholar   +1 more source

Canonical formulation of Poincaré BFCG theory and its quantization [PDF]

open access: yes, 2014
We find the canonical formulation of the Poincaré BFCG theory in terms of the spatial 2-connection and its canonically conjugate momenta. We show that the Poincaré BFCG action is dynamically equivalent to the BF action for the Poincaré group and we find ...
A. Miković, M. A. Oliveira
semanticscholar   +1 more source

Canonical quantization of a string describing N branes at angles

open access: yesNuclear Physics B, 2014
We study the canonical quantization of a bosonic string in presence of N twist fields. This generalizes the quantization of the twisted string in two ways: the in and out states are not necessarily twisted and the number of twist fields N can be bigger ...
Igor Pesando
doaj   +1 more source

Emerging Proximal Liquid Biopsy Approaches for Detecting Residual Disease and Predicting Recurrence in Head and Neck Cancer: A Review and Proposal of Novel Liquid Staging

open access: yesHead &Neck, EarlyView.
ABSTRACT Background Head and neck squamous cell carcinoma remains challenging due to high recurrence rates and poor survival outcomes. Developing precise technologies for disease burden assessment, treatment response, and minimal residual disease (MRD) surveillance is crucial for improving prognosis. Methods This review explores the potential of liquid
Vanessa Helou   +6 more
wiley   +1 more source

Diagrammatic Schemes for Nonlinear Optical Interactions

open access: yesJournal of Raman Spectroscopy, EarlyView.
Conventional diagrammatic approaches (blue frames in the figure) to semi‐classical nonlinear optical interactions emphasize either the bra and ket matter states (double‐sided Feynman diagrams and Liouville pathways) or the frequencies of the bra and ket radiative processes between energy levels (Albrecht notation). We propose a field‐type modification (
F. Vergari   +3 more
wiley   +1 more source

Time-covariant Schrödinger equation and invariant decay probability: the $$\Lambda $$ Λ -Kantowski–Sachs universe

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
The system under study is the $$\Lambda $$ Λ -Kantowski–Sachs universe. Its canonical quantization is provided based on a recently developed method: the singular minisuperspace Lagrangian describing the system, is reduced to a regular (by inserting into ...
Theodoros Pailas   +3 more
doaj   +1 more source

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