Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Sourlas, Nicolas"'
Autor:
Levesque, Dominique, Sourlas, Nicolas
One of the important questions in statistical mechanics is how irreversibility (time's arrow) occurs when Newton equations of motion are time reversal invariant. One objection to irreversibility is based on Poincar\'e's recursion theorem: a classical
Externí odkaz:
http://arxiv.org/abs/2402.12910
Publikováno v:
Phys. Rev. E 108, 044146 (2023)
Finite-size scaling above the upper critical dimension is a long-standing puzzle in the field of Statistical Physics. Even for pure systems various scaling theories have been suggested, partially corroborated by numerical simulations. In the present
Externí odkaz:
http://arxiv.org/abs/2307.01809
Autor:
Sourlas, Nicolas
Duality transformations play a very important role in theoretical physics. In this paper I propose new duality transformations for fermionic theories. They map the strong coupling regime of one theory to the weak coupling regime of another theory. Th
Externí odkaz:
http://arxiv.org/abs/1907.02767
Publikováno v:
J. Stat. Mech. (2019) 093203
We present a complementary estimation of the critical exponent $\alpha$ of the specific heat of the 5D random-field Ising model from zero-temperature numerical simulations. Our result $\alpha = 0.12(2)$ is consistent with the estimation coming from t
Externí odkaz:
http://arxiv.org/abs/1907.01340
Publikováno v:
Phys. Rev. Lett. 122, 240603 (2019)
We provide a non-trivial test of supersymmetry in the random-field Ising model at five spatial dimensions, by means of extensive zero-temperature numerical simulations. Indeed, supersymmetry relates correlation functions in a D-dimensional disordered
Externí odkaz:
http://arxiv.org/abs/1901.08473
Publikováno v:
J Stat Phys (2018) 172: 665-672
A lot of progress has been made recently in our understanding of the random-field Ising model thanks to large-scale numerical simulations. In particular, it has been shown that, contrary to previous statements: the critical exponents for different pr
Externí odkaz:
http://arxiv.org/abs/1711.09597
Autor:
Sourlas, Nicolas
It has been observed that the clasification into universality classes of critical behaviour, as established by perturbative renormalization group in the viscinity of four or six dimensions of space by the epsilon expansion, remains valid down to thre
Externí odkaz:
http://arxiv.org/abs/1706.07176
Publikováno v:
Phys. Rev. E 95, 042117 (2017)
The random-field Ising model is one of the few disordered systems where the perturbative renormalization group can be carried out to all orders of perturbation theory. This analysis predicts dimensional reduction, i.e., that the critical properties o
Externí odkaz:
http://arxiv.org/abs/1612.06156
Publikováno v:
Phys. Rev. Lett. 116, 227201 (2016)
By performing a high-statistics simulation of the $D=4$ random-field Ising model at zero temperature for different shapes of the random-field distribution, we show that the model is ruled by a single universality class. We compute to a high accuracy
Externí odkaz:
http://arxiv.org/abs/1605.05072
Autor:
Picco, Marco, Sourlas, Nicolas
Publikováno v:
EPL 109 37001 (2015)
We present numerical simulations for the diluted antiferromagnetic 3D Ising model (DAFF) in an external magnetic field at zero temperature. Our results are compatible with the DAFF being in the same universality class as the Random Field Ising model,
Externí odkaz:
http://arxiv.org/abs/1409.1795