Zobrazeno 1 - 10
of 4 979
pro vyhledávání: '"Non-linear sigma model"'
Autor:
Baglioni, Paolo, Di Renzo, Francesco
The Non-Linear Sigma Model (NLSM) is an example of a field theory on a target space exhibiting intricate geometry. One remarkable characteristic of the NLSM is asymptotic freedom, which triggers interest in perturbative calculations. In the lattice f
Externí odkaz:
http://arxiv.org/abs/2412.02624
There are two competing pictures for how the $O(3)$ non-linear sigma model (NLSM) with a topological theta term renormalises to the $\mathfrak{\hat{su}}(2)_1$ Wess-Zumino-Witten model. In the Affleck-Haldane picture, an `extension field' parametrises
Externí odkaz:
http://arxiv.org/abs/2411.08095
The non-linear $\Sigma$-Model minimally coupled with Maxwell theory in $3+1$ dimensions possesses a topologically non-trivial sector characterized by ``lasagna''-like configurations. We demonstrate that, when a specific quantization condition is met,
Externí odkaz:
http://arxiv.org/abs/2411.04245
We consider the discretized version of the sigma-model with supersphere target space $OSp(N+2m|2m)/OSp(N+2m-1|2m)$ and present a preliminary numerical study of bosonic and fermionic two-point functions for the cases $OSp(3|2)$ and $OSp(5|2)$. We obse
Externí odkaz:
http://arxiv.org/abs/2406.05018
The minimization of the action of a QFT with a constraint dictated by the block averaging procedure is an important part of Ba{\l}aban's approach to renormalization. It is particularly interesting for QFTs with non-trivial target spaces, such as gaug
Externí odkaz:
http://arxiv.org/abs/2403.09800
Autor:
Baglioni, Paolo, Di Renzo, Francesco
The $O(N)$ non-linear sigma model (NLSM) is an example of field theory on a target space with nontrivial geometry. One interesting feature of NLSM is asymptotic freedom, which makes perturbative calculations interesting. Given the successes in Lattic
Externí odkaz:
http://arxiv.org/abs/2401.11833
Autor:
Canfora, Fabrizio
It is show that one can derive a novel BPS bound for the gauged Non-Linear-Sigma-Model (NLSM) Maxwell theory in (3+1) dimensions which can actually be saturated. Such novel bound is constructed using Hamilton-Jacobi equation from classical mechanics.
Externí odkaz:
http://arxiv.org/abs/2309.03153
Publikováno v:
Phys. Rev. Lett. 132, 246503 (2024)
Novel critical phenomena beyond the Landau-Ginzburg-Wilson paradigm have been long sought after. Among many candidate scenarios, the deconfined quantum critical point (DQCP) constitutes the most fascinating one, and its lattice model realization has
Externí odkaz:
http://arxiv.org/abs/2307.05307
Autor:
Malik, Adnan1,2 (AUTHOR), Chaudhary, Shahid3 (AUTHOR) shahidpeak00735@gmail.com, Metwally, Ahmed Sayed M.4 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Jun2024, Vol. 84 Issue 6, p1-13. 13p.
Publikováno v:
Eur. Phys. J. C 83 (2023) 422
The accretion of matter onto celestial bodies like black holes and neutron stars is a natural phenomenon that releases up to $40\%$ of the matter's rest-mass energy, which is considered a source of radiation. In active galactic nuclei and X-ray binar
Externí odkaz:
http://arxiv.org/abs/2303.02625