Results 61 to 70 of about 436,858 (367)

Asymptotic boundary conditions and square integrability in the partition function of AdS gravity

Journal of High Energy Physics, 2020
There has been renewed interest in the path-integral computation of the partition function of AdS3 gravity, both in the metric and Chern-Simons formulations.
Joel Acosta, Alan Garbarz, Andrés Goya, Mauricio Leston   +3 more
doaj   +1 more source

Path-integral formulation of conformal anomalies

Zeitschrift f�r Physik C Particles and Fields, 1986
We present a path-integral formulation of conformal anomalies and point out an intimate interplay of the local Poincare anomaly and the dilatational anomaly. A key observation in our approach is that the algorithm of the path-integral formulation has natural foundation within the zeta-function regularization scheme.
K. Shizuya, H. Tsukahara
openaire   +1 more source

Universal Nonlinear Filtering Using Feynman Path Integrals II: The Continuous-Continuous Model with Additive Noise

, 2007
In this paper, the Feynman path integral formulation of the continuous-continuous filtering problem, a fundamental problem of applied science, is investigated for the case when the noise in the signal and measurement model is additive.
Balaji, Bhashyam
core   +3 more sources

A New Space-Time Theory Unravels the Origins of Classical Mechanics for the Dirac Equation

Quantum Reports
The Feynman path integral plays a central role in quantum mechanics, linking classical action to propagators and relating quantum electrodynamics (QED) to Feynman diagrams.
Wei Wen
doaj   +1 more source

Canonical formulation and path integral for local vacuum energy sequestering [PDF]

, 2016
Provedeme hamiltonovskou analýzu a analýzu integralu přes trajektorie pro lokalni formulaci modelu s odvazanim vakuove energie.
R. Bufalo, J. Klusovn, M. Oksanen
semanticscholar   +1 more source

On the Relation between Operator Constraint --, Master Constraint --, Reduced Phase Space --, and Path Integral Quantisation

, 2009
Path integral formulations for gauge theories must start from the canonical formulation in order to obtain the correct measure. A possible avenue to derive it is to start from the reduced phase space formulation.
Ashtekar A, Ashtekar A, Ashtekar A, Baratin A Flori C Thiemann T, Bojowald M Perez A, Buffenoir E, Dirac P A M, Dittrich B, Dittrich B, Engle J Han M Thiemann T, Fleischhack C, Fradkin E S Vilkovisky G A, Giesel K, Giesel K Hofmann S Thiemann T Winkler O, Giesel K Hofmann S Thiemann T Winkler O, Giesel K Tambornino J Thiemann T, Giesel K Thiemann T, Gitman D M, Giulini D, Glimm J, Haag R, Han M, Han M, Han M Thiemann T, Henneaux M, Hollands S Wald R, Muxin Han, Perez A, Ramond P, Reed M, Roeppstorff G, Rovelli C, Rovelli C, Rudin W, Scharf G, T Thiemann, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Wald R M   +41 more
core   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

The functional integral formulation of the Schrieffer–Wolff transformation

New Journal of Physics, 2016
We revisit the Schrieffer–Wolff transformation and present a path integral version of this important canonical transformation. The equivalence between the low-energy sector of the Anderson model in the so-called local moment regime and the spin-isotropic
Farzaneh Zamani, Pedro Ribeiro, Stefan Kirchner   +2 more
doaj   +1 more source

Path integral formulation for quantum nonadiabatic dynamics and the mixed quantum classical limit. [PDF]

Journal of Chemical Physics, 2007
This work identifies geometric effects on dynamics due to nonadiabatic couplings in Born-Oppenheimer systems and provides a systematic method for deriving corrections to mixed quantum classical methods. Specifically, an exact path integral formulation of
Vinod Krishna
semanticscholar   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

Molecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra, Shamsudheen Karuthedath Vellarikkal, Lixia Li, Hong Sun, Khoa Nguyen, Amber Montano, Suchitra Natarajan, Federica Piccioni, Alex Michael Tamburino, Xin Yu, Aleksandra Katarzyna Olow   +10 more
wiley   +1 more source