Zobrazeno 1 - 10
of 2 029
pro vyhledávání: '"Nagy Š"'
Autor:
Nagy, S., Polonyi, J.
The renormalization group method, more specifically the Wegner-Houghton equation, is used to find first order phase transitions in a simple scalar field theory with a polynomial potential. An improved definition of the running parameters allows us to
Externí odkaz:
http://arxiv.org/abs/2405.11043
Autor:
Nagy, S., Sailer, K.
Simple interpolation formulas are proposed for the description of the renormalization group (RG) scale dependences of the gravitational couplings in the framework of the 2-parameters Einstein-Hilbert (EH) theory of gravity and applied to a simple, an
Externí odkaz:
http://arxiv.org/abs/2209.10197
The functional renormalization group treatment of the conform reduced Einstein-Hilbert gravity is extended by following the evolution of the time and space derivatives separately, in order to consider the Lorentz symmetry during the evolution. We fou
Externí odkaz:
http://arxiv.org/abs/2208.14710
Autor:
Khodabakhshi, F., Moshkbar Bakhshayesh, M., Farshidianfar, M.H., Nagy, Š., Mohammadi, M., Wilde, G.
Publikováno v:
In Materials Science & Engineering A September 2024 909
When compact manifolds $X$ and $Y$ are both even dimensional, their Euler characteristics obey the K\"unneth formula $\chi(X\times Y)=\chi(X) \chi(Y)$. In terms of the Betti numbers $b_p(X)$, $\chi(X)=\sum_{p}(-1)^p b_p(X)$, implying that $\chi(X)=0$
Externí odkaz:
http://arxiv.org/abs/2105.13268
A definition of a convolution of tensor fields on group manifolds is given, which is then generalised to generic homogeneous spaces. This is applied to the product of gauge fields in the context of `gravity $=$ gauge $\times$ gauge'. In particular, i
Externí odkaz:
http://arxiv.org/abs/2104.01135
Autor:
Bakhshayesh, M. Moshkbar, Khodabakhshi, F., Farshidianfar, M.H., Nagy, Š., Mohammadi, M., Wilde, G.
Publikováno v:
In Materials Characterization January 2024 207
Autor:
Nagy, S., Polonyi, J.
The functional renormalization group flow of a scalar field theory with quartic couplings and a sharp spatial momentum cutoff is presented in four-dimensional Minkowski space-time for the bare action by retaining the entanglement of the IR and the UV
Externí odkaz:
http://arxiv.org/abs/2012.13811
Autor:
Borsten, L., Nagy, S.
We construct the pure gravity Becchi-Rouet-Stora-Tyutin (BRST) Einstein-Hilbert Lagrangian, to cubic order, using the BRST convolution product of two Yang-Mills theories, in conjunction with the Bern-Carrasco-Johansson (BCJ) double-copy.
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Externí odkaz:
http://arxiv.org/abs/2004.14945
We introduce a convolution on a 2-sphere and use it to show that the linearised Becchi-Rouet-Stora-Tyutin transformations and gauge fixing conditions of Einstein-Hilbert gravity coupled to a two-form and a scalar field, follow from the product of two
Externí odkaz:
http://arxiv.org/abs/1911.12324