503 reputation
212
bio website arsphysica.wordpress.com
location Sao Paulo, Brazil
age 31
visits member for 3 years, 8 months
seen May 8 at 19:12
Physicist, interested in agent-based simulation and statistical physics of models inspired by economic and biological reasoning. Programming in C and Python.

Nov
7
awarded  Nice Answer
Apr
25
comment Modern and complete references for the $k\cdot p$ method?
Hum... Rereading this now: I forgot to point out where the Kane becomes an approximation. That's when you choose a finite number of basis functions to expand your hamiltonian. You could, in principle, obtain an exact (and infinite dimensional) Kane operator, but this would hardly be practical.
Apr
20
awarded  Nice Answer
Apr
5
comment What does it mean to say “Gravity is the weakest of the forces”?
@BenCrowell When I first read the question, I assumed the person asking had no knowledge of physics beyond high school physics and I tried to adapt my answer to that context. Feel free to edit my question to add more detail if you want.
Apr
5
awarded  Yearling
Dec
4
awarded  Caucus
Nov
2
awarded  Nice Answer
Dec
15
awarded  Commentator
Nov
29
awarded  Yearling
Aug
22
awarded  Quorum
Feb
4
comment Can a single classical particle have any entropy?
@sb1 Thanks :). You know, I have the exact opposite feeling. I think information theory have a more fundamental status. In essence information theory is about general rules for how we acquire quantitative knowledge about things. And... physics is a specific stance of this problem. :)
Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
comment Can a single classical particle have any entropy?
@Tim unless I have an uncertainty about its initial position of the particle, or an uncertainty about the position of some other particle that will interact with it... or any other uncertainty about anything that will influence the motion of the particle. Using probability distributions have nothing to do with non-determinist equations of motion. After all, quantum equations of motion are all deterministic!
Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
comment Can a single classical particle have any entropy?
thanks :) . I don't understand why would I need many bodies though. That entropy is the legimate entropy of a single particle, and I can do with it anything I can do with any other entropy.
Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
revised Can a single classical particle have any entropy?
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Feb
3
revised Can a single classical particle have any entropy?
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