Wochenübersicht – nächste Woche

Wochenübersicht für die Woche vom

04 Jul 2022 bis 10 Jul 2022 (KW 27)

KW25 - KW26 - KW27 - KW28

keine vergangenen Seminare

zukünftige Termine
04 Jul 2022

Seminar about Experimental Particle and Astroparticle Physics (ETAP)

Institut für Physik

12:30 Uhr s.t., Staudingerweg 7, Minkowskiraum

Adrian Alvarez Fernandez, Institut für Physik
The Forward Feature EXtractor for the ATLAS Phase-II trigger upgrade
at Zoom also available

05 Jul 2022

Physikalisches Kolloquium

Institut für Kernphysik

16:15 Uhr s.t., HS KPH

Luciano Rezzolla, University of Frankfurt
Neutron stars: from macroscopic collisions to microphysics I will argue that if black holes represent one the most fascinating implications of Einstein's theory of gravity, neutron stars in binary system are arguably its richest laboratory, where gravity blends with astrophysics and particle physics. I will discuss the rapid recent progress made in modelling these systems and show how the gravitational signal can provide tight constraints on the equation of state for matter at nuclear densities, as well as on one of the most important consequences of general relativity for compact stars: the existence of a maximum mass. Finally, I will discuss how the merger may lead to a phase transition from hadronic to quark matter. Such a process would lead to a signature in the post-merger gravitational-wave signal and open an observational window on the production of quark matter in the present Universe.

Theorie-Palaver

Institut für Physik

14:00 Uhr s.t., Lorentz room (Staudingerweg 7, 5th floor)

Sravan Kumar, Tokyo Institute of Technology
Cosmic inflation is an important paradigm of the early Universe which is so far developed in two equivalent ways, either by geometrical modification of Einstein's general relativity (GR) or by introducing new forms of matter beyond the standard model of particle physics. Starobinsky's R+R^2 inflation based on a geometric modification of GR is one of the most observationally favorable models of cosmic inflation based on a geometric modification of GR. In this talk, I will discuss in detail the fundamental motivations for Starobinsky inflation and present how certain logical steps in the view of its UV completion lead to the emergence of a gravity theory that is non-local in nature. Then I will establish how one can perform studies of the early Universe in the context of non-local gravity and what are the observational consequences in the scope of future CMB and gravitational waves. I will discuss in detail how non-local R^2-like inflation can be observationally distinguishable from the local effective field theories of inflation. Finally, I will comment on prospects of non-local gravity as a promising candidate for quantum gravity.
at Zoom

06 Jul 2022

PRISMA+ Colloquium

Institut für Physik

13:00 Uhr s.t., Lorentz-Raum, 05-127, Staudingerweg 7

Claude Duhr, Univ. Bonn
From geometry to precision physics

07 Jul 2022

Seminar über Quanten-, Atom- und Neutronenphysik (QUANTUM)

Institut für Physik

14:00 Uhr s.t., None

Prof. Dr. Svetlana Malinovskaya, Stevens Institute of Technology, New Jersey, USA
Atoms in their highly excited electronic states, referred to as Rydberg atoms, have extraordinary nonlinear optical properties. Such atoms are highly polarizable and interact with each other via the dipole-dipole or the van-der-Waals interactions. Owing to these interactions, Rydberg atoms in optical traps possess the condensed matter-like collective behavior. They serve as a viable platform to study quantum many-body physics. Spin degrees of freedom of trapped Rydberg atoms bring rich new physics including quantum magnetism, quantum phases, and entanglement - a crucial resource in many quantum information and quantum communication tasks. In this talk, I will present a study of alkali rubidium atoms trapped in an optical lattice and controllably excited to the Rydberg states by linearly chirped laser pulses [1]. I will introduce a quantum control methodology to create entangled states of two typical classes, the W and the Greenberger-Horne-Zeilinger (GHZ) [2]. I will show that the entangled states of Rydberg atoms can be used to create the multiphoton entangled radiation states in a cavity and in free space [3]. The methodology exploits chirped-pulse adiabatic passage and provides a key step toward the resolution of a general problem of creating entanglement in high-dimensional quantum entities.
at Zoom

GRK 2516 Soft Matter Seminar

Uni Mainz

15:00 Uhr s.t., Minkowski Room, 05-119, Staudingerweg 7

Bhuwan Poudel, MPI-Polymer Research
The distribution of nanoparticles (NPs) within the polymer brush is a crucial element that determines their applicability, such as in nanosensors. The brush properties, such as grafting density, thickness, etc., can be used to control the structure formation of NPs. Here, we are interested in studying the assembly formation of NPs, in particular, by tuning the brush properties.
at Zoom

GRK 2516 Soft Matter Seminar

Uni Mainz

15:30 Uhr s.t., Minkowski Room, 05-119, Staudingerweg 7

Gokul Goving, JGU, Physics
TBA
at Zoom