Results 61 to 70 of about 1,356,633 (296)
Structure of loop space at finite N
Journal of High Energy PhysicsThe space of invariants for a single matrix is generated by traces containing at most N matrices per trace. We extend this analysis to multi-matrix models at finite N. Using the Molien-Weyl formula, we compute partition functions for various multi-matrix
Robert de Mello Koch, Antal Jevicki
doaj +1 more source
Diffeomorphism invariance in spherically symmetric loop quantum gravity
, 2008 We study the issue of the recovery of diffeomorphism invariance in the recently introduced loop quantum gravity treatment of the exterior Schwarzschild space-time.
Gambini, Rodolfo, Pullin, Jorge
core +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Positive and negative ladders in loop space
Journal of High Energy PhysicsMotivated by a new term-wise factorised formula for the two-loop MHV integrand for scattering amplitudes in N $$ \mathcal{N} $$ = 4 super Yang-Mills (SYM), together with recent results for the five-point negative ladders in loop space, we present the ...
Ross Glew, Tomasz Łukowski
doaj +1 more source
Loops in Anti–de Sitter Space [PDF]
Physical Review Letters, 2018 6 ...
Bertan, Igor, Sachs, Ivo
openaire +4 more sources
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Constraining the loop quantum gravity parameter space from phenomenology
Physics Letters B, 2018 Development of quantum gravity theories rarely takes inputs from experimental physics. In this letter, we take a small step towards correcting this by establishing a paradigm for incorporating putative quantum corrections, arising from canonical quantum ...
Suddhasattwa Brahma, Michele Ronco
doaj +1 more source
Quantization of Reissner-Nordstr\"{o}m Black Holes and Their Non-Singular Quantum Behavior
, 2012 Quantization of different regions of the Reissner-Nordstr\"{o}m space time (charged black hole) is done in the framework of loop quantum gravity. The geometry of Reissner-Nordstr\"{o}m space-time is expressed in terms of Ashtekar variables which form the
Heydari, Hoshang +1 more
core +1 more source
FEBS Letters, EarlyView.This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel +13 more
wiley +1 more source
Difference equations and integral families for Witten diagrams
Journal of High Energy PhysicsWe show that tree-level and one-loop Mellin space correlators in anti-de Sitter space obey certain difference equations, which are the direct analog to the differential equations for Feynman loop integrals in the flat space.
Mark Alaverdian +3 more
doaj +1 more source