Benjamin Horowitz

2,023 reputation

315

bio	website	pantheon.yale.edu/~bah8/…
	location	New Haven, CT
	age	20
visits	member for	2 years, 1 month
	seen	9 hours ago
stats	profile views	358

Undergraduate studying mathematics and physics.

Math interests include dynamic systems, representation theory, and differential geometry.

Physics interests include computational astrophysics, high energy theory, and general relativity.

	2,023 reputation	bio	website	pantheon.yale.edu/~bah8/…	visits	member for	2 years, 1 month
315 badges		location	New Haven, CT		seen	9 hours ago

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May 3	revised	proportion of dark matter/energy to other matters/energy at the beginning of the universe deleted 3 characters in body
May 3	answered	proportion of dark matter/energy to other matters/energy at the beginning of the universe
Apr 23	comment	Differential geometry/relativity question You have to ask the specific concept you are struggling with. We aren't going to solve your homework for you....
Apr 22	comment	Why do cold metal plate make less noise? If the gate is getting wet at all, the simple presence of the water droplets on it will change the acoustic properties of the gate (i.e. its resonant frequency), so the excited modes will be different on a wet day and might be not in the auditory range.
Apr 22	asked	Motivation for the Deformed Nekrasov Partition Function
Apr 9	awarded	Yearling
Feb 12	comment	What is a Killing vector field? It should also be noted that one can use that fact to construct conserved quantities and sometimes make a system integrable. In the case of the Schwarzschild Metric, those killing fields relate to conservation of energy and angular momentum (respectively).
Feb 10	revised	How do you measure distance to stars within the galaxy? added 34 characters in body
Jan 30	comment	Can spacetime exist in the absence of matter and energy? Gravitational waves can still exist in an empty universe ($T^{\mu\nu}=0$). In that way the concept of space-time itself has important significance without any reference to either the cosmological constant or inherit matter fields.
Jan 25	comment	Was Sun a part of a binary system? If we had a (dark matter) star companion, we would see much less regular orbits within the solar system than we currently have, as well as strange movements of the sun.
Jan 18	comment	Does chaos theory occur in quantum mechanics? Or in any non-newtonian physics? General Relativity also has chaos, although it is harder to define corresponding terms with newtonian dynamics (lyapunov exponents) since GR formulation uses intrinsic geometry. See this paper: arxiv.org/pdf/gr-qc/9602054v1.pdf
Dec 16	revised	Definitions of the Normal Ordering Operator in CFTs and QFTs deleted 10 characters in body
Dec 16	accepted	Equivalence of definitions of ADM Mass
Dec 16	asked	Definitions of the Normal Ordering Operator in CFTs and QFTs
Oct 16	answered	Can a universe emerge from nothing?
Oct 15	revised	Cosmology with a negative cosmological constant edited tags
Sep 30	comment	Quantum Field Theory: why fields are equal to zero on the boundary? Also, in the limit as the boundary goes to infinity, a non-zero boundary value will correspond to an infinite total energy.
Aug 23	comment	What are the technical limitations and drawbacks of breeder reactors compared with other types of nuclear reactors? Just guessing here: New reactors cost a lot of money, and most current running reactors (at least in the United States) are decades old. There is little political or economic will to invest billions of dollars to build new reactors.
Aug 14	revised	How to make a monopole magnet? added 124 characters in body
Aug 14	comment	Is it possible to build an instrument which can travel faster than light? @RodyOldenhuis , The issue is not necessarily the level of the question, but the fact that it is a duplicate of so many other questions about faster-than-light on this site.