Results 41 to 50 of about 35,463 (213)

Beyond the Non‐Hermitian Skin Effect: Scaling‐Controlled Topology from Exceptional‐Bound Bands

Advanced Science, EarlyView.
ABSTRACT We establish a novel mechanism for topological transitions in non‐Hermitian systems that are controlled by the system size. Based on a new paradigm known as exceptional‐bound (EB) band engineering, its mechanism hinges on the unique critical scaling behavior near an exceptional point, totally unrelated to the well‐known non‐Hermitian skin ...
Mengjie Yang, Ching Hua Lee
wiley   +1 more source

Sphere free energy of scalar field theories with cubic interactions

Journal of High Energy Physics
The dimensional continuation approach to calculating the free energy of d-dimensional Euclidean CFT on the round sphere S d has been used to develop its 4 – ϵ expansion for a number of well-known non-supersymmetric theories, such as the O(N) model.
Simone Giombi, Elizabeth Himwich, Andrei Katsevich, Igor Klebanov, Zimo Sun   +4 more
doaj   +1 more source

Exact result in N $$ \mathcal{N} $$ = 4 SYM theory: generalised double-logarithmic equation

Journal of High Energy Physics, 2022
We present the new results for the generalised double-logarithmic equation, obtained from the analytical continuation of the seven-loop anomalous dimension of twist-2 operators in the planar N $$ \mathcal{N} $$ = 4 SYM theory.
V. N. Velizhanin
doaj   +1 more source

Casimir Energy of the Universe and the Dark Energy Problem

, 2012
We regard the Casimir energy of the universe as the main contribution to the cosmological constant. Using 5 dimensional models of the universe, the flat model and the warped one, we calculate Casimir energy.
Bredberg I, Dirac P A M, Feynman R P, Feynman R P, G 'tHooft, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Ichinose S, Lysov V, Padmanabhan T, Polyakov A M, Randall L, Shoichi Ichinose, Witten E, Yoneya T   +20 more
core   +1 more source

Artificial Intelligence for Multiscale Modeling in Solid‐State Physics and Chemistry: A Comprehensive Review

Advanced Intelligent Systems, EarlyView.
This review explores the transformative impact of artificial intelligence on multiscale modeling in materials research. It highlights advancements such as machine learning force fields and graph neural networks, which enhance predictive capabilities while reducing computational costs in various applications.
Artem Maevskiy, Vitalii Kapitan, Andrey Ustyuzhanin   +2 more
wiley   +1 more source

The Huang–Yang Formula for the Low‐Density Fermi Gas: Upper Bound

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We study the ground state energy of a gas of spin 1/2$1/2$ fermions with repulsive short‐range interactions. We derive an upper bound that agrees, at low density ϱ$\varrho$, with the Huang–Yang conjecture. The latter captures the first three terms in an asymptotic low‐density expansion, and in particular the Huang–Yang correction term of order
Emanuela L. Giacomelli, Christian Hainzl, Phan Thành Nam, Robert Seiringer   +3 more
wiley   +1 more source

Low-energy theorem revisited and OPE in massless QCD

Journal of High Energy Physics
We revisit a low-energy theorem (LET) of NSVZ type in SU(N) QCD with N f massless quarks derived in [1] by implementing it in dimensional regularization. The LET relates n-point correlators in the l.h.s.
Marco Bochicchio, Elisabetta Pallante
doaj   +1 more source

Renormalisation of SMEFT bosonic interactions up to dimension eight by LNV operators

Journal of High Energy Physics, 2023
We present the renormalisation group running of the bosonic operators of the Standard Model effective field theory (SMEFT) by the Lepton Number Violating operators (LNVs) at 1-loop order up to O $$ \mathcal{O} $$ (v 4 /Λ4), with v ∼ 246 GeV as the ...
Supratim Das Bakshi, Álvaro Díaz-Carmona   +1 more
doaj   +1 more source

The exact renormalization group and dimensional regularization

International Journal of Modern Physics A, 2022
The exact renormalization group (ERG) is formulated implementing the decimation of degrees of freedom by means of a particular momentum integration measure. The definition of this measure involves a distribution that links this decimation process with the dimensional regularization technique employed in field theory calculations. Taking the dimension [
openaire   +2 more sources

Perturbative renormalization factors for generic $\Delta s=2$ four-quark operators in domain-wall QCD with improved gauge action [PDF]

, 2006
We calculate one-loop renormalization factors of generic DeltaS=2 four-quark operators for domain-wall QCD with the plaquette gauge action and the Iwasaki gauge action. The renormalization factors are presented in the modified minimal subtraction (MS-bar)
Kuramashi, Yoshinobu, Nakamura, Yousuke
core   +1 more source