There was a boy
a very strange enchanted boy
they say he wandered very far, very far
over land and sea
a little shy and sad of eye
but very wise was he
And then one day
a magic day he passed my way
and while we spoke of many things
fools and kings
this he said to me
"the greatest thing you'll ever learn
is just to love and be loved in return"
by Eden Ahbez sung by Nat King Cole (among many others)
hmmm - now i know where that came from.
sigh!
Wednesday, October 10, 2007
Monday, October 08, 2007
Friday, July 06, 2007
friday
It being a Friday - and now evening - there is not a soul in the building.
No one to talk to - which is the single largest source of my frustration
in Seoul. Especially, academics.
No one to talk to - which is the single largest source of my frustration
in Seoul. Especially, academics.
Monday, July 02, 2007
Fundamental density
I just heard Mateos talk at Strings 2007. He clearly mentions that at finite density the ME branes do not exist. The argument being the F1-force balance.
Its a bit funny - because from our work, we know that at fixed density and quark mass, there are no black hole type embeddings for low enough temperature (this is because of the temperature dependence in the expression for the physical density in terms of the charge density q).
I am going to just try to compute the fluctuation spectrum - and then drop the whole thing.
Its a bit funny - because from our work, we know that at fixed density and quark mass, there are no black hole type embeddings for low enough temperature (this is because of the temperature dependence in the expression for the physical density in terms of the charge density q).
I am going to just try to compute the fluctuation spectrum - and then drop the whole thing.
A work diary
I am trying to study what happens when we take string corrections to the gauge theory confinement-deconfinement phase transition a la Herzog.
The method to be adopted is:
First: find the contribution of the D7-brane to the total free energy (coming from Born-Infeld action). This contribution makes sense only if N_c is finite.
Second: If N_c is finite, then the D7-brane contributes a tadpole to the dilaton and axion (the latter via the Bianchii identity for F^{(1)} _{RR}). Similarly, the metric also picks up some back reaction.
Therefore, there are corrections to the bulk supergravity action as well, at O (N_f/N_c).
Thus, add all of these contributions, for a truncated geometry, a la Herzog (or Pando-Zayas) for each of thermal AdS, and AdS-Black hole backgrounds.
Then estimate the correction to the phase transition temperature - in particular what does it depend on ?
In this, we must keep T and quark mass m_q fixed.
The method to be adopted is:
First: find the contribution of the D7-brane to the total free energy (coming from Born-Infeld action). This contribution makes sense only if N_c is finite.
Second: If N_c is finite, then the D7-brane contributes a tadpole to the dilaton and axion (the latter via the Bianchii identity for F^{(1)} _{RR}). Similarly, the metric also picks up some back reaction.
Therefore, there are corrections to the bulk supergravity action as well, at O (N_f/N_c).
Thus, add all of these contributions, for a truncated geometry, a la Herzog (or Pando-Zayas) for each of thermal AdS, and AdS-Black hole backgrounds.
Then estimate the correction to the phase transition temperature - in particular what does it depend on ?
In this, we must keep T and quark mass m_q fixed.
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