Results 51 to 60 of about 166,360,743 (213)
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.Abstract Hypereutrophic lakes support high sedimentation of labile organic carbon, promoting sediment anoxia and GHG potential production. Lakes with complex morphometry exhibit extensive spatial heterogeneity in sediment methane (CH4) and carbon dioxide CO2 dynamics. We wondered: do lakes with uniform bathymetry show low spatial variation in sediments'
Emma Polauke +4 more
wiley +1 more source
D-dimensional modular assembly of higher-derivative four-point contact amplitudes involving fermions
Journal of High Energy PhysicsWe present a novel robust framework for systematically constructing D-dimensional four-point higher-derivative contact amplitudes. Our modular block (“LEGO”-like) approach builds amplitudes directly from manifestly gauge-invariant kinematic blocks, color-
John Joseph M. Carrasco +3 more
doaj +1 more source
Four-loop QCD cusp anomalous dimension at small angle
Journal of High Energy Physics, 2022 We calculate the small angle expansion of the four-loop QCD cusp anomalous dimension. As a byproduct of our calculation, we also obtain the four-loop anomalous dimension of the heavy-quark field in HQET.
Andrey G. Grozin +2 more
doaj +1 more source
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
On-shelļ methods for perturbative QCD [PDF]
, 2006 We present new on-shell techniques for the calculation of colour ordered helicity amplitudes in QCD. We review the methods of on-shell recursion and the MHV rules before applying them to tree-level processes within the Standard Model.
Badger, Simon D., Badger, Simon D
core
Baryon junction and string interactions. Part II
Journal of High Energy PhysicsWe study junctions between confining strings, extending the analysis of [Phys. Rev. D 110 (2024) 056018]. These junctions arise in Yang-Mills theories, and we focus on their universal low-energy dynamics.
Xuzixiang Lou, Siwei Zhong
doaj +1 more source
On the gauge-invariance of SCET beyond leading power
Journal of High Energy Physics, 2023 We point out that the gauge-invariance of the subleading Lagrangian of soft-collinear effective theory is realised in an intricate way through momentum-conservation violating contributions.
Philipp Böer, Patrick Hager
doaj +1 more source
The DNA of Calabi–Yau Hypersurfaces
Fortschritte der Physik, Volume 74, Issue 2, February 2026.Abstract Genetic Algorithms are implemented for triangulations of four‐dimensional reflexive polytopes, which induce Calabi–Yau threefold hypersurfaces via Batyrev's construction. These algorithms are shown to efficiently optimize physical observables such as axion decay constants or axion–photon couplings in string theory compactifications.
Nate MacFadden +2 more
wiley +1 more source
Heavy quark effective field theory at : QCD corrections to the currents [PDF]
Physics Letters B, 1997 Abstract We present a calculation of the renormalized heavy-light and heavy-heavy currents in HQET at order O ( 1 m Q 2 ).
Christopher Balzereit, Thorsten Ohl
openaire +1 more source
The baryonic phase in holographic descriptions of the QCD phase diagram
, 2012 We study holographic models of the QCD temperature-chemical potential phase diagram based on the D3/D7 system with chiral symmetry breaking. The baryonic phase may be included through linked D5-D7 systems. In a previous analysis of a model with a running
Kim, K.-Y. +10 more
core +1 more source