Results 21 to 30 of about 131,684 (265)

Waves in a spatial queue

open access: yesStochastic Systems, 2017
Envisaging a physical queue of humans, we model a long queue by a continuous-space model in which, when a customer moves forward, they stop a random distance behind the previous customer, but do not move at all if their distance behind the previous ...
David Aldous
doaj   +1 more source

The local SYK model and its triple-scaling limit

open access: yesJournal of High Energy Physics, 2023
We study a model of fermions with random couplings similar to conventional SYK with N number of flavours of fermions, at large N. Unlike the conventional SYK model, which has all-to-all couplings, the model we study, which we call local SYK, has a much ...
Takanori Anegawa   +2 more
doaj   +1 more source

Perturbation of multi-critical unitary matrix models, double scaling limits, and Argyres-Douglas theories

open access: yesNuclear Physics B, 2022
Using the saddle point method, we give an explicit form of the planar free energy and Wilson loops of unitary matrix models in the one-cut regime. The multi-critical unitary matrix models are shown to undergo third-order phase transitions at two points ...
Takeshi Oota
doaj   +1 more source

Highly Anisotropic Scaling Limits [PDF]

open access: yesJournal of Statistical Physics, 2015
We consider a highly anisotropic $d=2$ Ising spin model whose precise definition can be found at the beginning of Section 2. In this model the spins on a same horizontal line (layer) interact via a $d=1$ Kac potential while the vertical interaction is between nearest neighbors, both interactions being ferromagnetic.
CASSANDRO, Marzio   +2 more
openaire   +2 more sources

SYK Model with global symmetries in the double scaling limit

open access: yesJournal of High Energy Physics, 2023
We discuss the double scaling limit of the SYK model with global symmetries. We develop the chord diagram techniques to compute the moments of the Hamiltonian and the two point function in the presence of arbitrary chemical potential.
Prithvi Narayan, T S Swathi
doaj   +1 more source

Scaling Limits of Discrete Optimal Transport [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2020
45 pages, minor ...
Gladbach, Peter, Kopfer, Eva, Maas, Jan
openaire   +2 more sources

NONPERTURBATIVE DOUBLE SCALING LIMITS [PDF]

open access: yesInternational Journal of Modern Physics A, 2003
Recently, the author has proposed a generalization of the matrix and vector models approach to the theory of random surfaces and polymers. The idea is to replace the simple matrix or vector (path)-integrals by gauge theory or nonlinear σ model (path)-integrals. We explain how this solves one of the most fundamental limitations of the classic approach:
openaire   +5 more sources

A recipe for cracking the quantum scaling limit with machine learned electron densities

open access: yesMachine Learning: Science and Technology, 2023
A long-standing goal of science is to accurately simulate large molecular systems using quantum mechanics. The poor scaling of current quantum chemistry algorithms on classical computers, however, imposes an effective limit of about a few dozen atoms on ...
Joshua A Rackers   +3 more
doaj   +1 more source

Scaling of Metabolic Scaling within Physical Limits [PDF]

open access: yesSystems, 2014
Both the slope and elevation of scaling relationships between log metabolic rate and log body size vary taxonomically and in relation to physiological or developmental state, ecological lifestyle and environmental conditions. Here I discuss how the recently proposed metabolic-level boundaries hypothesis (MLBH) provides a useful conceptual framework for
openaire   +2 more sources

LIMITS ON THE NON-COMMUTATIVITY SCALE [PDF]

open access: yesCPT and Lorentz Symmetry, 2002
A non-vanishing vacuum expectation value for an antisymmetric tensor field leads to the violation of Lorentz invariance, controlled by the dimension (-2) parameter, theta_{mu nu}. We assume that the zeroth order term in theta-expansion represents the Standard Model and study the effects induced by linear terms in theta_{mu nu}. If coupling to theta_{mu
Mocioiu, Irina   +2 more
openaire   +2 more sources

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