320 reputation
113
bio website cmi.ac.in/~debangshu
location Chennai, India
age 24
visits member for 3 years, 7 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.


Apr
12
comment How to derive addition of velocities without the Lorentz transformation?
Elegant answer!!! +1 to Ron.
Feb
4
awarded  Commentator
Feb
3
comment Difficulty in visualizing more than three spatial dimension
I still don't understand the question...
Jan
31
revised Equation $H(q,p)=E$ is the equation of motion or energy-conservation law?
latex editing
Jan
31
suggested suggested edit on Equation $H(q,p)=E$ is the equation of motion or energy-conservation law?
Jan
31
asked How do I show that there exists variational/action principle for a given classical system?
Jan
31
awarded  Editor
Jan
31
revised Equation $H(q,p)=E$ is the equation of motion or energy-conservation law?
added 9 characters in body
Jan
31
answered Equation $H(q,p)=E$ is the equation of motion or energy-conservation law?
Jan
31
comment What if the strong force gave up?
Is this a serious question?
Jan
30
comment How to calculate the force acting on a magnet placed in a magnetic field?
I would say, this is kind of a tedious algebra which has been worked out in details in Julian Schwinger's book, Classical Electrodynamics Chapter 4-Macroscopic Electrodynamics Section 4.2. Here, first Schwinger has discussed the force on an atom due to an external electromagnetic field. Then, to find the force on a finite volume element he has integrated that force over the total volume with $n(\mathbf{r})$ as the number density of the molecules. You also need to define quantities like magnetic/electric dipole moment for the macroscopic body
Jan
30
answered How to calculate the electric field at a point in space
Jan
29
answered About constructing potential energy functions
Jan
29
comment How to calculate the electric field at a point in space
Did you mean that you have to find the field at the origin?
May
3
comment Which Mechanics book is the best for beginner in math major?
I never knew Spivak wrote on Class Mech!!! :-)
Apr
27
comment What exactly is meant by the “Gaussianity” of CMBR?
I saw Liddle and Lyth and the way dbrane defined Gaussianity is quite correct (at least according to Liddle and Lyth) however, I have issues regarding dbranes comment "Fourier modes being uncorrelated is precisely equivalent to statistical homogeneity & isotropy, and is completely independent of Gaussianity." Komatsu's review article clearly says the non-correlated Fourier mode is a result of Gaussianity!
Apr
27
answered Which Mechanics book is the best for beginner in math major?
Apr
25
comment What exactly is meant by the “Gaussianity” of CMBR?
Thanks a lot again :-)
Apr
25
comment What exactly is meant by the “Gaussianity” of CMBR?
Thanks a lot! I still do not get how we are going to connect the experimental observation with the data. In experiment, we measure $\langle T(\hat{n})T(\hat{n^{\prime}})\rangle$ while theoretically, we are calculating $\langle \delta \phi_{k} \delta \phi_{k'}\rangle$. How should we relate these?
Apr
25
awarded  Scholar