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A duck walks into a bar. Animal control is promptly called and the duck is released into a near by park.

My email is to be found on my website.


May
30
comment Gauge symmetry is not a symmetry?
Better write questions as own questions/post, than as an answer here - its, not a forum (even though that would have some advantages).
May
28
comment What is the name of the principle saying it is meaningless to talk/ask questions that can not be measured/tested?
@Argus: What is not always the case? What is the context for the exmaple? If you want to explain it to me, please open a chat discussion. (Besides, I don't understand the sentence - you should break it in two or use commas. You don't even say what it is, which is generally accepted.)
May
28
comment What is the name of the principle saying it is meaningless to talk/ask questions that can not be measured/tested?
Okay, I see what you're saying. Although your use of the term "consequences" is a little unconventional. By this undestanding, the mere statements "This desk is a red.", "This desk is blue." and "this desk is not red." all have consequences. Baiscally, I can map colors to the reals and say arbitrary many sentences, which all have "consequences".
May
28
comment What is the name of the principle saying it is meaningless to talk/ask questions that can not be measured/tested?
I get it if you want to say that 'the answer should only be about something measurabe'. I find "The different answers to the question should have different measurable consequences" confusing. Not all answers are right and isn't the answer already a prediction of what will be mesured? How can an answer have consequences? The answers "the sign is red" and "the sign is blue" don't have any consequences for the so called actual color of the sign. The only consequence is one regarding the truth of the answer. "answer" shouldn't be equated with "true statement" in a discussion about meaning.
May
27
revised How can there be a quantum field theory that predicts all particle masses?
added 12 characters in body
May
27
asked How can there be a quantum field theory that predicts all particle masses?
May
27
answered Validity Of the Drake Equation
May
27
comment Physical Explanation of Being Able to “Think”
This questions has many issues. Firstly, there are really >10 questions. Then questions like "Does it really disappear, or go to somewhere else in a sense we don't know and understand yet?" can have no answer. Then there are many claims, as well as ambigous staterments like "One century ago, we didn't even dream that this many sub atomic particles existed.". There is of course lots and lots of reaearch regarding that question, from biology, specifically biology of the brain, philosophy, theory of computation, especially A.I. research. You should make the question answerable, to get something.
May
25
comment $\hbar$, the angular momentum and the action
@Isaac: Well, that's harsh but okay. PS: I think you take "sensible" to mean something different than I intendend. I don't mean it senseless to ask the question, I mean that the question has a trivial answer. The answer to the question can hardly be "No.". Also, I never heard an argument for asking a question with the fewest words possible. (?)
May
25
comment $\hbar$, the angular momentum and the action
@Isaac: I don't know the context of the question "Why would we not speak about the sense of life, then?" here. Also, I don't know what it means to synthetically ask a question.
May
25
comment $\hbar$, the angular momentum and the action
@Isaac: I don't understand. The first question "so that...have the same units" is already implied in your formulation and only a matter of checking any source online and in the second question I don't know what "necessary" is supposted to mean. If you already consider QM, then it's obviously necessary and if you don't, then nothing is really necessary.
May
25
revised $\hbar$, the angular momentum and the action
deleted 4 characters in body
May
25
answered $\hbar$, the angular momentum and the action
May
24
comment Physical interpratation of propagator
Why do you want to give the same thing two interpretations? I'd argue that one can motivate $\vec p$ via $m\vec v$ and doesn't have to introduce another interpretation after introducing new variables. Also, I wouldn't view it as only one averaged plane wave but a summation of many, but whatever. Also the formulation with a relativistically invariant measure is nice and visually to look at, I'd use that for another orientation, especially regarding the $1$ over $E$.
May
22
comment How to get Planck length
It's clear to me that if there are only a finite number of (length) scales in the theory, that one can expect something to happen in field theoretic considerations w.r.t. to that unit (say Planck scale here $\ell_P$). However, what makes $\ell_P$ more fundamental than $2\ell_P$, how can one conclude that a particular numeric value has any significance without a good theory one that level?
May
20
comment Higgs mass and the hierarchy problem
"One common misconception is the belief of some people that if the space is discretized, converted to a lattice, a spin network, or whatever, one cures the problem of non-renormalizability of theories such as gravity." But once you have a natural lattice/spin network/etc. and this is actually the fundamental theory (and not a field thoery with infinitely many parameters to specify), then you can compute your observable values and the problem is really gone, isn't it?
May
15
comment Questions concerning some parts of the section on one-particle states in Weinberg's first volume on QFT
@lurscher: I.e. it's not legal?
May
13
revised CY moduli fields
I don't know no Schrodinger.
May
13
comment Gabriele Veneziano, strong nuclear force and beta-function
I didn't want to say it at first, but now I find it funny that it's still there after the edits of the very same expression: There is an unmotivated $x$ in the Gamma function.
May
13
suggested approved edit on CY moduli fields