Dear all,
I am pleased to inform you that our next speaker at monthly informal colloquium
is Dr Rashidi from Tafresh University.
In the following please find the details.
With kind regards,
Yasaman Farzan
Speaker: Dr Rashidi from Tefresh University
Title: "Some cosmological consequences of the generalized uncertainty principle"
Abstract:
The existence of a minimal observable length has long been suggested in quantum gravity as well as in string theory. At first, we briefly review the quantum mechanical structure of the minimal length uncertainty relation. Then we study the statistical mechanics of free ultra-relativistic particle systems obeying the generalized uncertainty principle in the grand canonical ensemble approach. We introduce some new statistical aspects of this generalized uncertainty principle. For example, we obtain the equation of state and show that in contrast to conventional quantum statistical mechanics the entropy of the system goes to a finite value at the infinite-temperature limit. It means that in this model it is possible to have negative temperatures and also negative pressures. At the end we investigate the consequences of the equation of state in the early universe and show that it can remove the big-bang singularity.
Time: 4:30 pm, Wednesday 20th of Bahman
Location: Farmanieh building, seminar room.
I am pleased to inform you that our next speaker at monthly informal colloquium
is Dr Rashidi from Tafresh University.
In the following please find the details.
With kind regards,
Yasaman Farzan
Speaker: Dr Rashidi from Tefresh University
Title: "Some cosmological consequences of the generalized uncertainty principle"
Abstract:
The existence of a minimal observable length has long been suggested in quantum gravity as well as in string theory. At first, we briefly review the quantum mechanical structure of the minimal length uncertainty relation. Then we study the statistical mechanics of free ultra-relativistic particle systems obeying the generalized uncertainty principle in the grand canonical ensemble approach. We introduce some new statistical aspects of this generalized uncertainty principle. For example, we obtain the equation of state and show that in contrast to conventional quantum statistical mechanics the entropy of the system goes to a finite value at the infinite-temperature limit. It means that in this model it is possible to have negative temperatures and also negative pressures. At the end we investigate the consequences of the equation of state in the early universe and show that it can remove the big-bang singularity.
Time: 4:30 pm, Wednesday 20th of Bahman
Location: Farmanieh building, seminar room.
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