Results 71 to 80 of about 12,765,544 (342)

Higher loop renormalization of a supersymmetric field theory [PDF]

, 2007
Using Dyson--Schwinger equations within an approach developed by Broadhurst and Kreimer and the renormalization group, we show how high loop order of the renormalization group coefficients can be efficiently computed in a supersymmetric model.Comment: 8 ...
Bogoliubov, Broadhurst, Broadhurst, Connes, Connes, Connes, Fidel A. Schaposnik, Gustavo Lozano, Kreimer, Kreimer, Marc P. Bellon, Wess   +11 more
core   +7 more sources

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

Exact renormalization group in Batalin-Vilkovisky theory

Journal of High Energy Physics, 2018
In this paper, inspired by the Costello’s seminal work [11], we present a general formulation of exact renormalization group (RG) within the Batalin-Vilkovisky (BV) quantization scheme.
Roberto Zucchini
doaj   +1 more source

Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy

Physics Letters B, 2023
We propose a novel many-body framework combining the density matrix renormalization group (DMRG) with the valence-space (VS) formulation of the in-medium similarity renormalization group.
A. Tichai, S. Knecht, A.T. Kruppa, Ö. Legeza, C.P. Moca, A. Schwenk, M.A. Werner, G. Zarand   +7 more
doaj   +1 more source

Renormalization group equations and integrability in Hamiltonian systems

, 1998
We investigate Hamiltonian systems with two degrees of freedom by using renormalization group method. We show that the original Hamiltonian systems and the renormalization group equations are integrable if the renormalization group equations are ...
Nambu, Yasusada, Yamaguchi, Yoshiyuki Y.
core   +2 more sources

Zeta functions, renormalization group equations, and the effective action [PDF]

, 1998
We demonstrate how to extract all the one-loop renormalization group equations for arbitrary quantum field theories from knowledge of an appropriate Seeley--DeWitt coefficient.
B. Gato, Carmen Molina-París, David Hochberg, G. K. Savvidy, I. G. Avramidi, I. G. Avramidi, I. G. Avramidi, J. Collins, J. S. Dowker, J. S. Dowker, J. S. Dowker, J. Zinn-Justin, Juan Pérez-Mercader, Matt Visser, N. D. Birrell, R. Courant, S. Hawking, S. K. Blau, S. Weinberg, Y. Fujimoto   +19 more
core   +2 more sources

The Bogolyubov renormalization group

Russian Mathematical Surveys, 1994
We begin with personal notes describing the atmosphere of "Bogoliubov renormalization group" birth. Then we expose the history of RG discovery in the QFT and of the RG method devising in the mid-fifties. The third part is devoted to proliferation of RG ideas into diverse parts of theoretical physics.
openaire   +3 more sources

Cosmology Is Not a Renormalization Group Flow [PDF]

Physical Review Letters, 2008
A critical examination is made of two simple implementations of the idea that cosmology can be viewed as a renormalization group flow. Both implementations are shown to fail when applied to a massless, minimally coupled scalar with a quartic self-interaction on a locally de Sitter background. Cosmological evolution in this model is not driven by any RG
openaire   +4 more sources

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

Advanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source

On a realization of {β}-expansion in QCD

Journal of High Energy Physics, 2017
We suggest a simple algebraic approach to fix the elements of the {β}-expansion for renormalization group invariant quantities, which uses additional degrees of freedom.
S.V. Mikhailov
doaj   +1 more source