Results 91 to 100 of about 683,210 (331)

Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory [PDF]

, 2020
José Antonio Belinchón, Carlos González, Ramón Herrera   +2 more
openalex   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Transients in black hole perturbation theory

Frontiers in Physics
Black hole quasinormal modes arise as eigenmodes of a non-normal Hamiltonian and consequently they do not obey orthogonality relations with respect to commonly used inner products, for example, the energy inner product.
Jérémy Besson, Jérémy Besson, Javier Carballo, Christiana Pantelidou, Benjamin Withers   +4 more
doaj   +1 more source

Chiral perturbation theory for nonzero chiral imbalance

Journal of High Energy Physics, 2020
We construct the most general low-energy effective lagrangian including local parity violating terms parametrized by an axial chemical potential or chiral imbalance μ 5, up to O p 4 $$ \mathcal{O}\left({p}^4\right) $$ order in the chiral expansion for ...
D. Espriu, A. Gómez Nicola, A. Vioque-Rodríguez   +2 more
doaj   +1 more source

Screened Perturbation Theory to Three Loops

, 2001
The thermal physics of a massless scalar field with a phi^4 interaction is studied within screened perturbation theory (SPT). In this method the perturbative expansion is reorganized by adding and subtracting a mass term in the lagrangian.
B. Kastening, B. Kastening, C. Zhai, E. Braaten, E. Braaten, E. Braaten, Eric Braaten, F. Karsch, G. Baym, H. Kleinert, H. Kleinert, J. O. Andersen, J. O. Andersen, J. O. Andersen, J. O. Andersen, J. O. Andersen, J.-P. Blaizot, J.-P. Blaizot, J.-P. Blaizot, J.M. Luttinger, Jens O. Andersen, M. I. Gorenstein, Michael Strickland, P. Arnold, P. Arnold, R. R. Parwani, R. R. Parwani, R. R. Parwani, S. Chiku, T. Hatsuda   +29 more
core   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source

Perturbative static quark potential in Maximal Abelian gauge

Physics Letters B, 2019
We calculate the static quark potential for an SU(N) gauge theory in the Maximal Abelian gauge as well as its Abelian projection up to two loops in perturbation theory. We discuss its renormalization properties.
Matthias Berwein, Yukinari Sumino
doaj   +1 more source

HSP70 governs permeability and mechanotransduction in primary human endothelial cells

FEBS Open Bio, EarlyView.
HSP70 chemical inhibition reduces endothelial cell proliferation and increases permeability, the latter supported by normal interendothelial junctional protein distribution. HSP70 also plays a role in shear stress response, a hemodynamic force naturally present in blood vessels and correlated with vessel protection.
Andrea Pinto‐Martinez, Everton G. Melo, Isadora C. B. Pavan, Percíllia V. S. Oliveira, Luiza B. C. T. Coimbra, Thaís L. S. Araujo   +5 more
wiley   +1 more source

Perturbation theory with dispersion and higher cumulants: framework and linear theory [PDF]

, 2022
Mathias Garny, Dominik Laxhuber, Román Scoccimarro   +2 more
openalex   +1 more source

Going beyond perturbation theory: Parametric Perturbation Theory

, 2007
We devise a {\sl non--perturbative} method, called {\sl Parametric Perturbation Theory} (PPT), which is alternative to the ordinary perturbation theory. The method relies on a principle of simplicity for the observable solutions, which are constrained to be linear in a certain (unphysical) parameter.
openaire   +2 more sources