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DTSTART;TZID=Europe/Berlin:20250127T143000
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DTSTAMP:20260525T125725
CREATED:20250120T164332Z
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SUMMARY:Relativistic implications of entropy and purity
DESCRIPTION:Space Science @ Drop Tower Seminar by Martin Bojowald and Joseph Balsells (via Zoom)\nIn this seminar\, we will explore the interplay between quantum mechanics and general relativity by examining the behavior of a quantum clock in curved spacetime. Unlike a classical point mass\, a quantum clock with nonzero position fluctuations cannot travel along a single geodesic. Instead\, it behaves as an extended object influenced by tidal forces and a superposition of time dilations at different altitudes. Using a geometrical formulation of quantum mechanics\, we will show that quantum correlations between spatial directions introduce a non-Riemannian structure to the spacetime experienced by the clock. A specific version of Finsler geometry provides a new setting for a combination of quantum and gravitational effects. The Finsler structure is parameterized by entropy and purity of the state\, and uncertainty relations prevent it from being Riemannian. By unifying quantum and gravitational effects in a geometric framework\, this approach offers new avenues for advancements in our understanding of quantum reference frames and their applications in semi-classical gravity. \nThe seminar will take place online via Zoom \nMonday 27.01.25 at 14:30 CET \nZoom Login: \nhttps://uni-bremen.zoom-x.de/j/4651981280\nMeeting ID: 465 198 1280\nPW: gravi
URL:https://qvls.de/event/relativistic-implications-of-entropy-and-purity/
LOCATION:Niedersachsen
CATEGORIES:Bildung,DE
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DTSTART;TZID=Europe/Berlin:20250127T150000
DTEND;TZID=Europe/Berlin:20250127T163000
DTSTAMP:20260525T125725
CREATED:20250127T190703Z
LAST-MODIFIED:20250127T190703Z
UID:10002225-1737990000-1737995400@qvls.de
SUMMARY:Vision of Future Observatories for Gravitational-Wave Astronomy and Fundamental Physics
DESCRIPTION:Venue: AEI-Hannover\, R103 and online \nZoom Meeting: https://mpi-aei.zoom-x.de/j/67027580612?pwd=E0lFzZ9R3EqG0j7oGzMRTDbn4h1O3R.1 \nMeeting ID: 670 2758 0612\nPasscode: 170810 \nAbstract\nCoherent light enables length measurements of exquisite sensitivity that lie at the core of fascinating scientific discoveries\, technological advances and engineering applications\, as well as observations in fundamental physics\, astrophysics\, geodesy\, and measurement science in general. \nNovel technologies and measurement principles find application in areas that are paradigm-changing; not only in fundamental science\, but that directly impact the global economic and political stage. Detections from ground-based gravitational-wave observatories\, like Advanced LIGO and VIRGO together with measurements of their electromagnetic counterparts\, have opened a new window to observe the universe’s gravitational spectrum and have reshaped astronomy and astrophysics through Gravitational Wave and Multi-Messenger observations. As a community\, we are now charged with the next significant leap in this area: Third Generation ground-based Gravitational-Wave Observatories. Here\, I will present my vision for the development of these facilities\, such as the Einstein Telescope and Cosmic Explorer. Furthermore\, I will comment on possibilities of gaining an advantage in fundamental physics observations with facilities and technology that are readily available today. \nAt the core of these exciting scientific endeavors lie innovative optomechanical technologies and precision laser interferometers that make this all possible. In my presentation\, I will also discuss the research work conducted in my research group at the University of Arizona on the advances and implementation of novel optomechanical technologies in areas of precision measurements\, inertial sensing\, and scientific space missions such as LISA\, future GRACE-like missions. \nBrief Bio\nDr. Guzman is an experimental physicist specializing in space optical technologies\, inertial sensing\, novel optomechanical sensors and precision laser interferometry. He is a professor and holder of Jack L. Jewell endowed chair at the Wyant College of Optical Sciences in the University of Arizona. He also holds a joint courtesy appointment with the Department of Physics. He is the principal investigator of the UA groups in the international LISA Mission Consortium\, and the LIGO Scientific Collaboration. He received his Bachelor’s degree in Electrical Engineering at the University of Costa Rica\, subsequently moving to Germany to obtain a Master’s degree in Engineering Physics at the University of Oldenburg in Germany\, and a Ph.D. in Physics from the Max Planck Institute for Gravitational Physics\, where his doctoral research focused on the development of optical technologies for LISA\, LISA Pathfinder and GRACE follow-on. He was awarded a NASA Postdoctoral Program (NPP) fellowship at NASA Goddard Space Flight Center and later performed as Senior Research Associate at the National Institute of Standards and Technology (NIST)\, and Research Group Leader at the German Space Agency (DLR) in collaboration with the University of Bremen.
URL:https://qvls.de/event/vision-of-future-observatories-for-gravitational-wave-astronomy-and-fundamental-physics/
LOCATION:Niedersachsen
CATEGORIES:Bildung,DE
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