Desde el Grupo de Termodinámica y Computación Cuántica de la Universidad de Granada les invitamos al siguiente seminario. Ponente: Martí Perarnau Llobet (Universidad Autònoma de Barcelona) Fecha y hora: Martes 26 de Mayo, 10:00 Lugar: Seminario de Física Computacional. Planta baja del edificio de Física. Facultad de Ciencias. Titutlo: Quantum Many-Body Metrology: From Precision Limits to Thermalization Bounds. Resumen: What are the ultimate bounds nature imposes when quantum systems interact with heat? In this talk, we’ll look at this question from two complementary angles: parameter estimation and speed of thermalization. First, we explore how much information can be extracted from a quantum probe at thermal equilibrium, deriving fundamental bounds for the Quantum Fisher Information of thermal and ground state probes. But reaching equilibrium takes time. In the second part, we use a similar framework of Hamiltonian estimation to show that quantum mechanics places a strict speed limit on the thermalization process itself. At high temperatures, this limit is set by the Planckian dissipation time ($\tau \geq \hbar / 2k_B T$), while at low temperatures, it’s governed by the system's spectral gap. This talk is based on https://urldefense.com/v3/__https://arxiv.org/abs/2402.06582__;!!D9dNQwwGXtA... <https://urldefense.com/v3/__https://arxiv.org/abs/2402.06582__;!!D9dNQwwGXtA!TkGxfrs3DO4RKrlenDtP7RqT29p4azWiX7N-V5dXeOhks7b8gOWz43tHs9e0KypIp4SYHEqhlR5B9czqrmJMOhMfxtLPaEYvCg$> and https://urldefense.com/v3/__https://arxiv.org/abs/2506.19188__;!!D9dNQwwGXtA... El seminario es accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Un saludo QTCG ————————————————————— Quantum Thermodynamics and Computation Group University of Granada https://ic1.ugr.es/members/qtc/