Results 31 to 40 of about 1,806 (222)

Dimensional regularization and renormalization of QED [PDF]

Communications in Mathematical Physics, 1990
The tree expansion method of renormalization [see e.g. \textit{G. Gallavotti}, Rev. Mod. Phys. 57, 471-562 (1985)] has been applied to QED by \textit{J. Feldman}, \textit{T. Hurd}, and the authors [QED: A proof of renormalizability. Lect. Notes Phys. 312 (1988)]. The purpose of the present paper is to replace the loop regularization used there, with an
Rosen, Lon, Wright, Jill D.
openaire   +2 more sources

Effective action for the Yukawa model in curved spacetime

Journal of High Energy Physics, 2018
We consider the one-loop renormalization of a real scalar field interacting with a Dirac spinor field in curved spacetime. A general Yukawa interaction is considered which includes both a scalar and a pseudoscalar coupling. The scalar field is assumed to
David J. Toms
doaj   +1 more source

Multi-collinear splitting kernels for track function evolution

Journal of High Energy Physics, 2023
Jets and their substructure play a central role in many analyses at the Large Hadron Collider (LHC). To improve the precision of measurements, as well as to enable measurement of jet substructure at increasingly small angular scales, tracking information
Hao Chen, Max Jaarsma, Yibei Li, Ian Moult, Wouter Waalewijn, Hua Xing Zhu   +5 more
doaj   +1 more source

One-loop operator matching in the static heavy and domain-wall light quark system with O(a) improvement [PDF]

, 2011
We discuss perturbative O(g2a) matching with static heavy quarks and domainwall light quarks for lattice operators relevant to B-meson decays and B0–¯B 0 mixing. The chiral symmetry of the light domain-wall quarks does not prohibit operator mixing at O(a)
Aoki, Yasumichi, Jonathan M. Flynn, Oleg Loktik, Ishikawa, Tomomi, Izubuchi, Taku, Taku Izubuchi, Tomomi Ishikawa, Yasumichi Aoki, Flynn, Jonathan M., Loktik, Oleg   +9 more
core   +1 more source

Line defect RG flows in the ε expansion

Journal of High Energy Physics, 2023
A general analysis of line defect renormalisation group (RG) flows in the ε expansion below d = 4 dimensions is undertaken. The defect beta function for general scalar-fermion bulk theories is computed to next-to-leading order in the bulk couplings ...
William H. Pannell, Andreas Stergiou
doaj   +1 more source

Optimal designs for indirect regression [PDF]

, 2004
In many real life applications, it is impossible to observe the feature of interest directly. For example, scientists in Materials Science may be interested in detecting cracks inside objects, not visible from the outside. Similarly, non-invasive medical
Edmund Jones, G. Vitale, Osses Alvarado, Axel, Nicolai Bissantz, Vitale, Guido, Cumsille, Patricio, Takahashi, Takéo, Hajo Holzmann, Chern, I-Liang, Conca, Carlos, Preziosi, Luigi, Kavian, O., L. Preziosi, Zuo, D., Langer, Matthias, Censor, Yair, Mueller, J. L., Ambrosi, Davide Carlo, Malik, Muslim, Schwindt, Erica L., Anthony Dubois, Herrera, C. N. L., Bissantz, Nicolai, Hamilton, S. J., Horng-Shing Lu, Henry, Pierro, Álvaro Rodolfo De, Schwindt, Erica, Rosier, Lionel, Helou Neto, Elias Salomão, Muslim Malik, Marc Saillard, Cheney, Margaret, Jiang, Ming, Kawano, Alexandre, Kamal Belkebir, Dette, Holger, Alvarez, Catalina, Von Herrmann, A., Holger Dette, Monard, F., Margaret Cheney, Holzmann, Hajo, Courdurier Bettancourt, Matías, Borden, Brett, Friz, L., Pandolfi, Luciano, Chen, Tai-Been, Romero, F., Brett Borden, Stefanie Biedermann, Conca Rosende, Carlos, Munnier, Alexandre, Ortega Palma, Jaime, Jones, Edmund, Woracek, Harald, Carlos Conca, Biedermann, Stefanie, Hamilton, Sarah J., Alexandre Munnier   +58 more
core   +1 more source

One-loop diagrams with quadratic propagators from the worldsheet

Journal of High Energy Physics, 2022
It is well known that forward limits of tree-level amplitudes (and those trivalent diagrams they consist of) produce one-loop amplitudes and trivalent diagrams with propagators linear in the loop momentum.
Bo Feng, Song He, Yong Zhang, Yao-Qi Zhang   +3 more
doaj   +1 more source

Renormalization Using Domain Wall Regularization [PDF]

Progress of Theoretical Physics, 2002
We formulate the renormalization procedure using the domain wall regularization that is based on the heat-kernel method. The quantum effects of both fermions and bosons (gauge fields) are taken into account. The background field method is quite naturally introduced.
openaire   +2 more sources

The NSVZ scheme for N=1 SQED with Nf flavors, regularized by the dimensional reduction, in the three-loop approximation

Physics Letters B, 2017
At the three-loop level we analyze, how the NSVZ relation appears for N=1 SQED regularized by the dimensional reduction. This is done by the method analogous to the one which was earlier used for the theories regularized by higher derivatives. Within the
S.S. Aleshin, I.O. Goriachuk, A.L. Kataev, K.V. Stepanyantz   +3 more
doaj   +1 more source

Scalar-fermion fixed points in the ε expansion

Journal of High Energy Physics, 2023
The one-loop beta functions for systems of N s scalars and N f fermions interacting via a general potential are analysed as tensorial equations in 4 − ε dimensions.
William H. Pannell, Andreas Stergiou
doaj   +1 more source