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comment Average velocity = Arithmetic Mean
The notion of heuristic? Oh, I thought you were referring to the point I made in my answer, my bad. I just used the word frivolously, so no reference, sorry.
Apr
23
comment Average velocity = Arithmetic Mean
@ArkaKarmakar You know about what the area under a speed-time graph is, right?
Apr
18
comment How are anyons possible? (another version)
There are two answers at the PO import of this question: physicsoverflow.org/14488/…
Apr
18
awarded  Necromancer
Apr
14
awarded  Yearling
Mar
20
awarded  Necromancer
Jan
1
comment Why is the formulation of M(embrane) theory so hard?
The difficulty isn't in formulating the membranes, which exist even in the 10-dimensional string theories (in certain formalisms, anyway). The difficulty in formulating M-theory is that in its definition it's a theory which gives the Heterotic E and Type IIA string theories respectively when compactified on a line segment and circle respectively. 10-dimensional string theories were derived because we could, and some turned out to be remarkably consistent with the Standard Model, while M-theory is to be written based on certain defined properties.
Nov
25
awarded  Popular Question
Nov
18
revised Why does string theory require 9 dimensions of space and one dimension of time?
added 29 characters in body
Nov
7
comment Boundary stress-energy tensor form ADS/CFT
There is an answer at PhysicsOverflow.
Oct
13
revised How to learn physics?
deleted 575 characters in body
Oct
13
revised How to learn physics?
deleted 575 characters in body
Oct
9
comment Why does light always travel in a straight line?
@MBN Of course. I was only responding to the questioner, who probably wasn't referring to geodesics. Or so I guess.
Sep
9
comment Stone dropped from a moving train
For both questions, because the stone isn't accelerating - it's moving horizontally at the same speed as that of the train when the stone was dropped, but acceleration would require a constant force being applied on it.
Aug
18
revised What S means in S-duality?
S-duality is not exclusive to string theory.
Aug
18
comment What S means in S-duality?
S-duality is a duality between strong coupling and weak coupling, so I'd guess it comes from the "strong", as in "strong-weak".
Aug
9
comment In string-net condensation, what does the quantized charge means?
I don't think there is anything unclear about this question. Regarding the first question - As explained here by Xiao-Gang Wen, it has to do with the boundary of the string being discrete.
Jul
24
revised Why there is no Gibb's phenomenon in QM?
deleted 202 characters in body
Jun
30
comment Why are there no branes in heterotic string theory?
Actually, there are branes in heterotic string theory, but they just don't behave as boundary conditions for fundamental strings. See here for an answer.
Jun
29
awarded  Pundit