QFC2024- Quantum gases, fundamental interactions and cosmology

Session

Fundamental Interactions -Talks on specific topics

23 Oct 2024, 16:00

ex 131 (Sala riunioni "Galilei")

Conveners

Fundamental Interactions -Talks on specific topics

• Maria Luisa Chiofalo (Department of Physics, University of Pisa)

Fundamental Interactions -Talks on specific topics

• Rosa Poggiani (PI)

Fundamental Interactions -Talks on specific topics

• Scilla Degl'Innocenti (Istituto Nazionale di Fisica Nucleare)

Fundamental Interactions -Talks on specific topics

• Jorge Yago Malo

13. Shear to entropy ratio of superfluids

Massimo Mannarelli (Istituto Nazionale di Fisica Nucleare)

23/10/2024, 16:00

Fundamental interactions

ORAL

We discuss the shear viscosity to entropy ratio in superfluids. We focus on transonic superfluids, showing that the presence of an horizon may lead to the saturation of the so-called KSS bound.

3. Dephasing-tolerant quantum sensing for transverse magnetic fields with spin qudits

Luca Lepori (Istituto Nazionale di Fisica Nucleare)

24/10/2024, 14:00

Fundamental interactions

ORAL

We propose a dephasing-tolerant protocol for quantum sensing of transverse magnetic fields which exploits spin qudit sensors with embedded fault-tolerant quantum error correction. By exploiting longitudinal drives, the transverse field induces logical Rabi oscillations between encoded states, whose frequency is linear in the transverse field to be probed. Numerical simulations show that the...

12. Nonlinearities in black hole ringdown

Leonardo Juliano (Istituto Nazionale di Fisica Nucleare)

24/10/2024, 17:00

Fundamental interactions

ORAL

We study the quadratic quasi-normal modes of a Schwarzschild black hole, which are perturbations originating from the coupling of two linear quasi-normal modes. As recent studies suggest, nonlinear effects in black hole perturbation theory may be crucial for accurately describing a black hole ringdown. We present a new class of "quadratic" quasi-normal modes at second order in perturbation...

2. Field theory description of surface and vorticity waves incident on an analogue black hole

Alessia Biondi (CNRS, Institut Pprime)

25/10/2024, 15:10

Fundamental interactions

ORAL

Analogue Gravity [1] enables the replication and investigation of phenomena normally associated with (Quantum) Field Theory in Curved Spacetime through meticulously controlled tabletop experiments. In the particular system of a classical open channel flow, gravity waves on the surface of an inviscid, incompressible and irrotational fluid serve as a means to simulate phenomena akin to those...