IPM Calendar 
Sunday 22 September 2019   Today  
Events for day: Wednesday 28 August 2019    
           13:30 - 15:00     Weekly Seminar
Quasinormal Modes of a Black Hole with Quadrupole Moment

School
ASTRONOMY

We determine the quasinormal mode (QNM) frequencies of a black hole with quadrupole moment in the eikonal limit using the light-ring method. The generalized black holes that are discussed in this work possess arbitrary quadrupole and higher mass moments in addition to mass and angular momentum. Static collapsed configurations with mass and quadrupole moment are treated in detail and the QNM frequencies associated with two such configurations are evaluated to linear order in the quadrupole moment. For a rotating system, we consider the Hartle-Thorne spacetime. This collapsed system, as well as its QNMs, is characterized by mass M, quadrupole ...

           14:00 - 16:00     Seminar
Transgenerational effects of adolescent male rats morphine exposure on pain perception and electrophysiological properties of Locus coeruleus neurons

School
COGNITIVE SCIENCES

Venue:
School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM),
Opposite the ARAJ, Artesh Highway, Tehran, Iran on map




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           14:00 - 15:00     Weekly Seminar
Condensed Matter and Statistical Physics Group
Importance of Long-Wavelength Phonons for Dissociative Chemisorption: N2 on Ru(0001)

School
PHYSICS

Venue: Seminar Room (classroom A), Farmanieh Building, IPM
Organized by: School of Nano Science ...

           14:00 - 15:00     Weekly Seminar
Importance of Long-Wavelength Phonons for Dissociative Chemisorption: N2 on Ru(0001)

School
NANO SCIENCES

Importance of Long-Wavelength Phonons for Dissociative Chemisorption: N2 on Ru(0001)

Abstract:

Ab initio molecular dynamics (AIMD) simulations can describe reactions of molecules with metal surfaces accurately. However, the computational costs of AIMD have limited its applications to the systems with reaction probabilities higher than 1%.Recently, Neural network potentials (NNPs) have allowed overcoming this limitation but small cell sizes (typically 3 * 3) inherited which resulting in a rather coarse description of the phonon continuum by phonons of only very few different wave vectors (typically 9). In t ...

           15:00 - 16:00     Weekly Seminar
Evolution of electromagnetic fields in the QGP

School
PARTICLES AND ACCELERATORS

Abstract: In heavy-ion collisions, extremely large electromagnetic fields are produced by fast-moving charged nucleons. They are sufficiently large to affect the low energy QCD processes and thus produce observable effects, whose occurrence is, however, directly related to the lifetime of these fields. In this talk, the evolution of electromagnetic fields in the QGP phase is discussed. For this aim, I present some analytical solutions to the equations of relativistic magnetohydrodynamics (RMHD). In particular, I argue that the role of the electric field in the QGP may be underestimated. Besides, I show that in certain setups the evolution of ...