Results 21 to 30 of about 160,382 (249)

Quark-Antiquark Effective Potential in Symplectic Quantum Mechanics

Advances in High Energy Physics, 2022
In this paper, we study within the structure of Symplectic Quantum Mechanics a bidimensional nonrelativistic strong interaction system which represent the bound state of heavy quark-antiquark, where we consider a Cornell potential which consists of ...
Renato Luz, Gustavo Petronilo, Ademir de Santana, Caroline Costa, Ronni Amorim, Rendisley Paiva   +5 more
doaj   +1 more source

Corrections to Sirlin's Theorem in $O(p^6)$ Chiral Perturbation Theory [PDF]

, 1997
We present the results of the first two-loop calculation of a form factor in full $SU(3) \times SU(3)$ Chiral Perturbation Theory. We choose a specific linear combination of $\pi^+, K^+, K^0$ and $K\pi$ form factors (the one appearing in Sirlin's theorem)
A. Sirlin, D. Bessis, E. Golowich, G. t'Hooft, H. W. Fearing, J. Gasser, J. Gasser, K. Schilcher, M. Ademollo, P. Post, P. Post, R. M. Barnett, S. R. Amendolia, S. R. Amendolia, S. Weinberg, W. R. Molzon   +15 more
core   +3 more sources

Yang-Mills form factors on self-dual backgrounds

Journal of High Energy Physics, 2023
The construction of perturbative quantities on non-linear backgrounds leads to the possibility of incorporating strong field effects in perturbation theory.
Giuseppe Bogna, Lionel Mason
doaj   +1 more source

Integrating by parts at finite density

Journal of High Energy Physics, 2023
Both nonzero temperature and chemical potentials break the Lorentz symmetry present in vacuum quantum field theory by singling out the rest frame of the heat bath.
Juuso Österman, Philipp Schicho, Aleksi Vuorinen   +2 more
doaj   +1 more source

A complete non-perturbative renormalization prescription for quasi-PDFs

Nuclear Physics B, 2017
In this work we present, for the first time, the non-perturbative renormalization for the unpolarized, helicity and transversity quasi-PDFs, in an RI′ scheme.
Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou, Kyriakos Hadjiyiannakou, Karl Jansen, Haralambos Panagopoulos, Fernanda Steffens   +6 more
doaj   +1 more source

Asymptotic Integration of Certain Differential Equations in Banach Space

Моделирование и анализ информационных систем, 2017
We investigate the problem of constructing the asymptotics for weak solutions of certain class of linear differential equations in the Banach space as the independent variable tends to infinity.
Pavel N. Nesterov
doaj   +1 more source

Randomized Benchmarking beyond Groups

PRX Quantum, 2022
Randomized benchmarking (RB) is the gold standard for experimentally evaluating the quality of quantum operations. The current framework for RB is centered on groups and their representations but this can be problematic.
Jianxin Chen, Dawei Ding, Cupjin Huang
doaj   +1 more source

Tackling non-linearities with the effective field theory of dark energy and modified gravity [PDF]

, 2017
We present the extension of the effective field theory framework to the mildly non-linear scales. The effective field theory approach has been successfully applied to the late time cosmic acceleration phenomenon and it has been shown to be a powerful ...
Frusciante, Noemi, Papadomanolakis, Georgios   +1 more
core   +3 more sources

A Generalization of a Classic Theorem in the Perturbation Theory for Linear Operators

Journal of Mathematical Analysis and Applications, 1999
Let \(T\) be a bounded linear operator of a Banach space \(X\) into another \(Y\) such that the null space \(N(T)\) is a complementary subspace of \(X\) and the range \(R(T)\) a complementary subspace of \(Y\). This note considers the equation \(Tx= y\) for given \(y\) and its perturbed one \((T+\delta T)\widetilde x= y+\delta y\), to estimate the norm
Ding, Jiu, Huang, L.J.
openaire   +1 more source

Integrable Theory of the Perturbation Equations

, 1996
An integrable theory is developed for the perturbation equations engendered from small disturbances of solutions. It includes various integrable properties of the perturbation equations: hereditary recursion operators, master symmetries, linear ...
B. Fuchssteiner, Ballantyne, Chen, Currò, David, Dorfman, Elgin, Fuchssteiner, Fuchssteiner, Fuchssteiner, Fuchssteiner, Gel'fand, Grimshaw, Herman, Karpman, Keener, Kivshar, Kodama, Kraenkel, Kraenkel, Ma, Ma, Ma, Ma, Ma, Ma, Magri, Matsuno, Oevel, Olver, Schwarz, Tamizhmani, Tanaka, W.X. Ma, Wadati, Zakharov   +35 more
core   +2 more sources