315 reputation
112
bio website cmi.ac.in/~debangshu
location Chennai, India
age 24
visits member for 3 years, 4 months
seen Jul 28 at 9:06

Final year Bachelors student of Theoretical Physics at Chennai Mathematical Institute. Interested in Cosmology and applications of Field Theory to Condensed Matter Systems.


Jul
2
awarded  Curious
Jul
11
awarded  Yearling
May
26
comment Conserved currents in higher-spin theories
O.k. I figured it out myself. It seems this formalism was developed by Fronsdal long time back. However, another question has popped up. Spin-$s$ massless fields are given by totally symmetric tensor $\phi_{n_1 n_2..n_s}$. There is a condition though on these fields. They have to be "double traceless" i.e I contract them with $g_{\mu_1 \mu_2}g_{\mu_3 \mu_4}$. Why do I need to impose this condition?
May
26
asked Conserved currents in higher-spin theories
May
17
comment How do we simulate Nuclear explosion?
Please modify your question and ask what aspect of physics would you like to know. What is the model you are working with? What attempts have been made etc.?
May
17
comment How do we simulate Nuclear explosion?
This is PHYSICS stack exchange and your question is not appropriate for such a forum.
May
13
accepted Parametrization of $U(N)$ non-linear sigma model
May
13
asked Parametrization of $U(N)$ non-linear sigma model
May
11
comment Construction of the supergravity side explicitly in gauge/gravity dualities
Also, although I have not mentioned it explicitly, I guess I am also assuming a very big result though I am not sure if it is true: Every CFT will have an AdS dual theory. If this is false, then obviously my question itself becomes irrelevant.
May
11
comment Construction of the supergravity side explicitly in gauge/gravity dualities
Actually I should have mentioned in the post itself. My question was also motivated by the paper (arxiv.org/pdf/1011.2986.pdf) of Gopakumar & Gaberdiel. They have shown the duality of two theories again. This time, the theories are a 2d $\mathcal{W}_{N}$ minimal model with large $N$ ('t Hooft limit) and a higher spin theory in $AdS_3$. What I'm asking is this. If I would have started with the 2d $\mathcal{W}_{N}$ minimal model then, can the fact that it is dual to a higher spin theory in $AdS_3$ automatically emerge out from my calculations?
May
11
revised Construction of the supergravity side explicitly in gauge/gravity dualities
Formula corrected, Added a section on weak-strong coupling duality
May
11
awarded  Citizen Patrol
May
11
asked Construction of the supergravity side explicitly in gauge/gravity dualities
Apr
1
revised S-Wave for minimally coupled scalar field
Problem statement has been expanded and further details were added.
Apr
1
asked S-Wave for minimally coupled scalar field
Mar
26
comment Vector Addition — Direction
$F_3$ will be in a direction opposite to $F_1$ ONLY IF $F_2$ is in SAME DIRECTION as $F_1$ or else in general NO.
Mar
26
comment Vector Addition — Direction
if $F_1 = F_2$, it means $F_3 = 2F_1$. So, equation (2) is $F_1 -F_3 = F_1 - 2F_1 = -F_1$. Now, since $F_1 = F_2$, we can also write $-F_1 = -F_2$ which proves the second statement: $F_1-F_3 = -F_2$ and hence there is no contradiction between (2) and (3).
Mar
26
comment Vector Addition — Direction
Yes, they may be in the same direction but, nothing can be said about the magnitude and there is no way you can write Equation (3) from Equation (1) even if they are in the same direction. As you yourself pointed out, vector equality will hold if both magnitude and direction are the same.
Mar
26
comment Vector Addition — Direction
Your first assumption is wrong. $F_1 + F_2 - F_3=0$ never implies $F_1$ and $F_2$ are in the same direction. You can definitely add forces in different directions and the fact that their sum is zero means you can construct a triangle with these vectors (adjust the direction accordingly). Check this link: en.wikipedia.org/wiki/Euclidean_vector#Addition_and_subtraction
Feb
22
accepted Poincare Patch covers half of the hyperboloid of AdS