Results 41 to 50 of about 100 (58)

Toward massless and massive event shapes in the large-β 0 limit

Journal of High Energy Physics, 2021
We present results for SCET and bHQET matching coefficients and jet functions in the large-β 0 limit. Our computations exactly predict all terms of the form α s n + 1 n f n $$ {\alpha}_s^{n+1}{n}_f^n $$ for any n ≥ 0, and we find full agreement with the ...
N. G. Gracia, V. Mateu
doaj   +1 more source

Renormalization group properties in the conformal sector: towards perturbatively renormalizable quantum gravity

Journal of High Energy Physics, 2018
The Wilsonian renormalization group (RG) requires Euclidean signature. The conformal factor of the metric then has a wrong-sign kinetic term, which has a profound effect on its RG properties.
Tim R. Morris
doaj   +1 more source

Bion non-perturbative contributions versus infrared renormalons in two-dimensional ℂP N − 1 models

Journal of High Energy Physics, 2019
We derive the semiclassical contributions from the real and complex bions in the two-dimensional ℂP N − 1 sigma model on ℝ×S 1 with a twisted boundary condition. The bion configurations are saddle points of the complexified Euclidean action, which can be
Toshiaki Fujimori, Syo Kamata, Tatsuhiro Misumi, Muneto Nitta, Norisuke Sakai   +4 more
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Hyperasymptotic approximation to the plaquette and determination of the gluon condensate

Journal of High Energy Physics, 2020
We give the hyperasymptotic expansion of the plaquette with a precision that includes the terminant associated to the leading renormalon. Subleading effects are also considered.
Cesar Ayala, Xabier Lobregat, Antonio Pineda   +2 more
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Dimensional regularization and Breitenlohner-Maison/’t Hooft-Veltman scheme for γ 5 applied to chiral YM theories: full one-loop counterterm and RGE structure

Journal of High Energy Physics, 2020
We study the application of the Breitenlohner-Maison-’t Hooft-Veltman (BMHV) scheme of Dimensional Regularization to the renormalization of chiral gauge theories, focusing on the specific counterterm structure required by the non-anticommuting Dirac γ 5 ...
Hermès Bélusca-Maïto, Amon Ilakovac, Marija Madjor-Božinović, Dominik Stöckinger   +3 more
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Factorization at subleading power and endpoint-divergent convolutions in h → γγ decay

Journal of High Energy Physics, 2020
It is by now well known that, at subleading power in scale ratios, factorization theorems for high-energy cross sections and decay amplitudes contain endpoint-divergent convolution integrals.
Ze Long Liu, Matthias Neubert
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On renormalons of static QCD potential at u = 1/2 and 3/2

Journal of High Energy Physics, 2020
We investigate the u = 1 / 2 O Λ QCD $$ u=1/2\left[\mathcal{O}\left({\Lambda}_{\mathrm{QCD}}\right)\right] $$ and u = 3 / 2 O Λ QCD 3 $$ u=3/2\left[\mathcal{O}\left({\Lambda}_{\mathrm{QCD}}^3\right)\right] $$ renormalons in the static QCD potential in ...
Yukinari Sumino, Hiromasa Takaura
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Field theoretic renormalization study of interaction corrections to the universal ac conductivity of graphene

Journal of High Energy Physics, 2018
The two-loop interaction correction coefficient to the universal ac conductivity of disorder-free intrinsic graphene is computed with the help of a field theoretic renormalization study using the Bogoliubov-Parasiuk-Hepp-Zimmermann prescription.
S. Teber, A. V. Kotikov
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Testing the Bethe ansatz with large N renormalons. [PDF]

Eur Phys J Spec Top, 2021
Mariño M, Miravitllas R, Reis T.
europepmc   +1 more source

Tensor bounds on the hidden universe

Journal of High Energy Physics, 2018
During single clock inflation, hidden fields (i.e. fields coupled to the inflaton only gravitationally) in their adiabatic vacua can ordinarily only affect observables through virtual effects.
Adrián del Rio, Ruth Durrer, Subodh P. Patil   +2 more
doaj   +1 more source