physics

Physics research, papers, etc.

Agent-based modeling paper

Current review of agent-based modeling, software, programming language, and experiences using them

Agent-based modeling presentation

An overview of toolsets, techniques, and interesting agent-based models

Gravity and 3D Collisions

Movie of a breve Agent-based model showing 3D gravity and collisions

Gray Scott reaction diffusion agent-based model

breve Agent-based model showing Gray Scott reaction diffusion

Evolving Swarm

Movie of 3D breve model of Boid swarm with ground movement, feeding, death, and evolution added

An Overview of Python with Functional Programming

A discussion of Python for scientific programming, with comparisons to C; an overview of Functional Programming

Traversable Lorentzian Wormholes

An overview of the history and relevance of wormholes is given. Morris and Thorne’s description of a traversable wormhole is revisited, and the requirement for exotic matter is derived. The null, weak, strong, dominant, averaged null, averaged weak, and averaged strong energy conditions and the ways that traversable wormholes violate them is discussed. The connection between topological censorship and the averaged null energy condition is shown, with the result that wormholes are not topologically censored. The existence of a method for extracting a sufficient amount of exotic matter from the vacuum stress energy to build a wormhole with an arbitrarily large throat is proven. The connection between wormholes and time machines is explored, and how theorems related to closed timelike curves (chronology protection) or global hyperbolicity (cosmic censorship) might prevent their creation. Finally, it is stated how physical theories might be reconciled to the notion of traversable Lorentzian wormholes.

Toroidal and Simple Orbifold Compactification

A presentation describing anti-analycity, n-dimensional Toroidal compactification, 1-d Orbifold compactification, and relations to Calabi-Yau space.