Results 91 to 100 of about 250,438 (216)

Revisiting concepts of thermal physiology: understanding negative feedback and set‐point in mammals, birds, and lizards

open access: yesBiological Reviews, EarlyView.
Abstract The thermoregulatory system of homeothermic endotherms operates to attain thermal equilibrium, that is no net loss or gain of heat, where possible, under a thermal challenge, and not to attain a set‐point or any other target body temperature.
Duncan Mitchell   +5 more
wiley   +1 more source

More on pure gravity with a negative cosmological constant

open access: yesJournal of High Energy Physics, 2023
We identify an ambiguity in the Chern-Simons formulation of three-dimensional gravity with negative cosmological constant that originates in an outer automorphism of the Lie algebra sl $$ \mathfrak{sl} $$ (2, ℝ).
Lior Benizri, Jan Troost
doaj   +1 more source

On Associative Conformal Algebras of Linear Growth [PDF]

open access: yesarXiv, 2000
Lie conformal algebras appear in the theory of vertex algebras. Their relation is similar to that of Lie algebras and their universal enveloping algebras. Associative conformal algebras play a role in conformal representation theory. We introduce the notions of conformal identity and unital associative conformal algebras and classify finitely generated
arxiv  

Multiphysics Simulation Methods in Computer Graphics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Physics simulation is a cornerstone of many computer graphics applications, ranging from video games and virtual reality to visual effects and computational design. The number of techniques for physically‐based modeling and animation has thus skyrocketed over the past few decades, facilitating the simulation of a wide variety of materials and ...
Daniel Holz   +5 more
wiley   +1 more source

On irregular singularity wave functions and superconformal indices

open access: yesJournal of High Energy Physics, 2017
We generalize, in a manifestly Weyl-invariant way, our previous expressions for irregular singularity wave functions in two-dimensional SU(2) q-deformed Yang-Mills theory to SU(N).
Matthew Buican, Takahiro Nishinaka
doaj   +1 more source

Non-abelian infrared divergences on the celestial sphere

open access: yesJournal of High Energy Physics, 2021
We consider the infrared factorisation of non-abelian multi-particle scattering amplitudes, and we study the form of the universal colour operator responsible for infrared divergences, when expressed in terms of coordinates on the ‘celestial sphere ...
Lorenzo Magnea
doaj   +1 more source

Spatial and spatiotemporal volatility models: A review

open access: yesJournal of Economic Surveys, EarlyView.
Abstract Spatial and spatiotemporal volatility models are a class of models designed to capture spatial dependence in the volatility of spatial and spatiotemporal data. Spatial dependence in the volatility may arise due to spatial spillovers among locations; that is, in the case of positive spatial dependence, if two locations are in close proximity ...
Philipp Otto   +4 more
wiley   +1 more source

Twisting theory, relative Rota-Baxter type operators and $L_\infty$-algebras on Lie conformal algebras [PDF]

open access: yesarXiv, 2023
Based on Nijenhuis-Richardson bracket and bidegree on the cohomology complex for a Lie conformal algebra, we develop a twisting theory of Lie conformal algebras. By using derived bracket constructions, we construct $L_\infty$-algebras from (quasi-)twilled Lie conformal algebras.
arxiv  

Implementing artificial consciousness

open access: yesMind &Language, EarlyView.
Implementationalism maintains that conventional, silicon‐based artificial systems are not conscious because they fail to satisfy certain substantive constraints on computational implementation. In this article, we argue that several recently proposed substantive constraints are implausible, or at least are not well‐supported, insofar as they conflate ...
Leonard Dung, Luke Kersten
wiley   +1 more source

Gause Symmetry and Howe Duality in 4D Conformal Field Theory Models

open access: yesActa Polytechnica, 2010
It is known that there are no local scalar Lie fields in more than two dimensions. Bilocal fields, however, which naturally arise in conformal operator product expansions, do generate infinite Lie algebras.
I. Todorov
doaj  

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