TITLE: Ghosts on the way to a QFT for gravity ABSTRACT: Ghosts have been a stumbling block in the development of a UV complete quantum field theory for gravity. We discuss how difficulties associated with ghosts are overcome in the context of 0+1d QFT. Obtaining a probability interpretation is the key issue, and for this […]
TITLE: Is an information viewpoint useful in condensed matter experiment? ABSTRACT: Some of the most significant developments in science concern information, from artificial intelligence to quantum computation and communications. In this regard there has long been a close connection between statistical mechanics and information theory. An interesting question then is whether we can use new […]
Title: (i) Search for Higgs+photon production at LHC and constraints on light quark Yukawa couplings; (ii) Sensitivity to CP violation in the Higgs-strahlung process at a Future Circular Collider. Abstract: (i) A search for Higgs+photon production is performed with the LHC data for the first time. The analysis focuses on the topology of a boosted Higgs […]
Title: The Formation of Galaxies and Supermassive Black Holes in the First Billion Years
TITLE: Exploring Planetary-Mass Brown Dwarfs in Young Star Clusters with JWST ABSTRACT: The discovery and characterization of free-floating planetary-mass objects (FFPMOs) is fundamental to our understanding of star and planet formation. The James Webb Space Telescope affords the opportunity to search for objects down to the opacity limit for fragmentation in nearby star-forming regions. We […]
TITLE: Liquid Crystals as Cores and Claddings ABSTRACT: Liquid crystals (LCs) refer to structured mesophases that retain the ability to flow while exhibiting broken symmetries. One simple LC is the nematic phase (NLC), which is comprised of rod-shaped molecules that co-orient with a D∞h symmetry. Their anisotropic properties can be modeled locally using a prolate […]
Title: Around the forces in 80 microseconds Abstract: With large amounts of data, a Higgs boson discovery, and world-leading constraints on an enormous amount of parameters and interactions, the Large Hadron Collider has been a phenomenal tool. However, it is going through a mid-life crisis. More data, more Higgs bosons, and more constraints are not bringing the same […]
Title: Exploring Cosmic Acceleration: Insights from DESI 2024 JHU/STScI Joint Colloquium: Hee-Jong Seo (Ohio University)
TITLE: Multi-messenger observations of gravitational waves sources: from LIGO to Cosmic Explorer, ABSTRACT: The direct detection of gravitational waves is revolutionizing our view of the universe and has opened a new era in the field of time-domain multi-messenger astronomy. In this talk, I will summarize key open questions on the astrophysics of stellar-mass compact objects […]
TITLE: Quasinormal Modes from Penrose Limits ABSTRACT: In this talk, I will explain how to describe quasinormal modes with a large real frequency using Penrose limits. To do so, I first recall relevant aspects of the Penrose limit, as well as the plane wave spacetimes that arise in this limit, to subsequently tie this together with […]
TITLE: Quantum geometry: how to picture bound electrons in periodic lattices ABSTRACT: The concept of quantum geometry has been at the forefront of condensed matter physics, starting from how quantized Berry curvature leads to quantized Hall conductivity, anomalous velocities in Dirac metals, or other topological responses in a growing list of so-called topological materials. Recently, […]
Title: Dark QCD: the Next Frontier in Dark Matter Abstract: There has been a surge of interest in hidden valley models with new, strong forces, sometimes called "dark QCD". These models propose asymmetric, composite dark matter in the form of "dark hadrons" that would evade direct and indirect bounds as well as typical collider DM searches for […]
Machine Learning the Evolution of Gas from Clouds to Stars
Moon Ying on the topic "Protein assemblies prefer regular growth due to membrane energy penalty during budding" and Mateusz Ratman with the title "Spontaneous spatial sorting by cell shape in growing colonies of rod-like bacteria"
All members of the department are invited and encouraged to attend. The purpose of the meeting will be to make some announcements and to provide information and updates on various research, education, outreach, and administrative initiatives in the department. As with the colloquium, a wine and cheese reception will follow.
TITLE: Photonic Band Gap R&D for Next Generation Axion Haloscopes ABSTRACT: Axions are a well-motivated dark matter candidate particle, which have the potential to simultaneously solve multiple problems in particle physics. As a dark matter candidate, large scale haloscopes, such as ADMX and HAYSTAC, aim to detect axions in the galactic halo by measuring the […]
Talk titles will be available on the CAS wiki page.
Title: Quantum near extremal black holes and anomalies Abstract: The Bekenstein–Hawking formula gives a coarse-grained count of the number of microstates of a black hole, and it is remarkable that it may sometimes be reproduced from a microscopic count in string theory. However, the standard approach (which we will briefly review) typically relies on supersymmetry by counting […]
Condensed Matter & Biological Physics Seminar: Salem Al Mosleh (University of Maryland Eastern Shore) Host: Brian Camley
* Lunch at noon TITLE: Testing Gravity at ever shorter scale: a trip into exotic experimental physics ABSTRACT: Since the times of Henry Cavendish and John Mitchell, the strength of gravity has been measured by comparing it to the reaction of a calibrated mechanical spring. While in the last 60 years planetary measurements (with natural and […]
Title: The Open Access Era of Exoplanet Characterization at the Onset of Next-Generation Telescopes
Hosted by JHU Gender Minorities & Women in Physics (G-WiP), TITLE: A new vision for the Center for Astrophysics | Harvard & Smithsonian ABSTRACT: I will present the latest discoveries and developments at the Center for Astrophysics | Harvard & Smithsonian (CfA). Our discoveries cover solar astrophysics, star formation and evolution, galaxy formation & evolution, extrasolar […]
High energy physics theory seminar TITLE: TBD, ABSTRACT: TBD Bloomberg 447