Tags » Mathematical Physics

3D topological semimetals

In their recently published Letter in Journal of Physics A: Mathematical and Theoretical researchers from the University of Adelaide have provided a topological classification scheme for generalized Weyl semimetals.  789 more words

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a simple theory

the natural numbers are a sequence of physical constants

Physics

Deformed Numbers and Calculus

When I first heard of fractional calculus, I thought that it sounds contrived. But then again, so are many abstractions and generalizations of established ideas in mathematics. 705 more words

Mathematical Physics

Noether symmetries and stability of ideal gas solution in Galileon Cosmology [CL]

http://arxiv.org/abs/1702.01603

A class of generalized Galileon cosmological models, which can be described by a point-like Lagrangian, is considered in order to utilize Noether’s Theorem to determine conservation laws for the field equations. 62 more words

Cosmology And Nongalactic Astrophysics

Inflationary $α$-attractor cosmology: A global dynamical systems perspective [CL]

http://arxiv.org/abs/1702.00306

We study flat FLRW $\alpha$-attractor $\mathrm{E}$- and $\mathrm{T}$-models by introducing a dynamical systems framework that yields regularized unconstrained field equations on two-dimensional compact state spaces. 119 more words

Cosmology And Nongalactic Astrophysics

Exact collisional plasma fluid theories [CL]

http://arxiv.org/abs/1701.08037

An expansion of the velocity space distribution functions in terms of multi-index Hermite polynomials is carried out to derive a consistent set of collisional fluid equations for plasmas. 124 more words

Astrophysics Of Galaxies