Tuesday, April 1
4:00 pm - 5:00 pm	Chemical Physics Seminar Noyes 147 (J. Holmes Sturdivant Lecture Hall) Wavepackets that Probe Electron transfer and Quantum-Like States Gregory D. Scholes, William S. Tod Professor of Chemistry, Department of Chemistry, Princeton University,
5:00 pm - 6:00 pm	Caltech-Tsinghua Joint Colloquium Online Event Virasoro and triplet vertex algebras at positive rational central charge Robert McRae, Yau Mathematical Sciences Center, Tsinghua University,

Wednesday, April 2
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Existence and Stability of Euclidean Wormholes with $S^1\times S^2$ Boundaries Xiaoyi Liu, UC Santa Barbara,
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event TBA Xiaoyi Liu, UC Santa Barbara,
12:15 pm - 1:00 pm	Caltech/IPAC Lunch Seminar IPAC 102 (Large Conference Room) The Sizes of Dwarf Galaxies Nushkia Chamba, NASA/Ames,
4:00 pm - 5:00 pm	ASTRONOMY COLLOQUIUM Cahill, Hameetman Auditorium AGN Variability: A Cornucopia or a Phantasmagoria? Matthew Graham, Research Professor of Astronomy, California Institute of Technology,

Thursday, April 3
2:45 pm - 3:45 pm	Algebra and Geometry Seminar Linde Hall 187 Non-archimedean periods for log Calabi-Yau surfaces Soham Karwa, Department of Mathematics, Duke University,
4:00 pm - 5:00 pm	Algebra and Geometry Seminar Linde Hall 187 Quantum K Rings of Partial Flags, Coulomb Branches, and the Bethe Ansatz Irit Huq-Kuruvilla, Department of Mathematics, Virginia Tech,

Friday, April 4
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event An L-function Approach to 2D CFT Eric Perlmutter, IPhT-Saclay, Paris,
2:00 pm - 3:00 pm	TAPIR Seminar Online and In-Person Event Connecting Compact Object Dynamics with Multi-Messenger Observations in Dense Star Clusters Claire Ye, Postdoctoral Fellow, CITA, University of Toronto,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Linde Hall 187 The L^2 Alexander torsion for 3-manifolds and sutured manifold theory Jianru Duan, School of Mathematical Sciences, Peking University,
8:00 pm - 10:00 pm	Stargazing Lecture Cahill Center for Astronomy and Astrophysics If You Give a Black Hole a Cookie Jean Somalwar, PhD Candidate, Department of Astronomy, Caltech,

Monday, April 7
1:30 pm - 2:30 pm	Presidential Distinguished Speaker Series: David Ho (BS '74) Athenaeum
3:00 pm - 4:00 pm	Math Teaching Seminar Linde Hall 359 Conversations about Math Teaching: Flipping Math 6b Catherine Babecki, Department of Mathematics, Caltech,
3:00 pm - 4:00 pm	LIGO Seminar West Bridge 351 (LIGO Science Conference Room) Deep source, noise, and glitch separation for the LISA global fit, with applications to LIGO
4:00 pm - 5:00 pm	Astronomy Tea Talk Cahill 370 "MOMOS: A Superconducting MKID High Resolution Multi-Object Spectrograph Testbed for the Detection and Characterization of Exoplanets" and "Learning to Read and Write in Physics and Astronomy" Dr. Ronald Lopez, NSF Postdoctoral Fellow, UC Santa Barbara, Dr. Briley Lewis, NSF Postdoctoral Fellow, UC Santa Barbara,
4:00 pm - 5:00 pm	High Energy Physics Seminar Online and In-Person Event Higher Order Flavor Sum Rules Margarita Gavrilova, Cornell University,

Tuesday, April 8
4:00 pm - 5:00 pm	Chemical Physics Seminar Noyes 147 (J. Holmes Sturdivant Lecture Hall) Roel Tempelaar, Assistant Professor of Chemistrry, Department of Chemistry, Northwestern University,

Wednesday, April 9
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Quantizing the Area: Geometry from Conditional Probability Marc Klinger, University of Illinois, Urbana-Champaign,
12:00 pm - 1:00 pm	Logic Seminar Online Event Simplicial complexes, stellar moves, projective amalgamation, and set theory Sławomir Solecki, Department of Mathematics, Cornell University,
12:15 pm - 1:00 pm	Caltech/IPAC Lunch Seminar Online Event Imaging Young Jupiters with GPI 2.0 Saavidra Perera, UC Santa Cruz,
4:00 pm - 5:00 pm	ASTRONOMY COLLOQUIUM Cahill, Hameetman Auditorium SPHEREx First Light Jamie Bock, Marvin L. Goldberger Professor of Physics, Caltech; Senior Research Scientist, JPL, California Institute of Technology; Jet Propulsion Laboratory,

Thursday, April 10
2:45 pm - 3:45 pm	Caltech/USC Joint Algebra and Geometry Seminar Linde Hall 187 Counting Maps to Hypersurfaces in Grassmannians Shubham Sinha, Department of Mathematics, ICTP,
4:00 pm - 5:00 pm	Number Theory Seminar Linde Hall 387 Murmurations from functional equations Alex Cowan, Pure Mathematics, University of Waterloo,
4:00 pm - 5:00 pm	Caltech/USC Joint Algebra and Geometry Seminar Linde Hall 187 A moduli theoretic approach to heights on stacks Dori Bejleri, Department of Mathematics, University of Maryland,
4:00 pm - 5:00 pm	LA Probability Forum Interplay of Vertex and Edge Dynamics for Dense Random Graphs Frank den Hollander, Department of Mathematics, Leiden University,
4:00 pm - 5:00 pm	Physics Colloquium Online and In-Person Event Probing Photonic Quantum Matter with Cats Jonathan Simon, Stanford University,
4:00 pm - 5:00 pm	Number Theory Seminar Linde Hall 387
5:00 pm - 6:00 pm	LA Probability Forum Random cluster models on random graphs Remco van der Hofstad, Department of Mathematics and Computer Science, Eindhoven University of Technology,
6:00 pm - 7:00 pm	LA Probability Forum Large deviations for the giant in spatial random graphs Joost Jorritsma, Department of Statistics, Magdalen College, University of Oxford,

Friday, April 11
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Decoherence near Black Holes: Causality, Fluctuation and Dissipation Sam Gralla, University of Arizona,
2:00 pm - 3:00 pm	Special Quantum Matter Seminar East Bridge 114 Quantum circuit and novel quantum state preparation from spacetime duality Yizhi You, Professor, Department of Physics, Northeastern University,
2:00 pm - 3:00 pm	TAPIR Seminar Online and In-Person Event Three-Dimensional Long-Term CCSN Simulations: New Insights and Challenges Tianshu Wang, Associate Fellow, N3AS, UC Berkeley,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Linde Hall 187 Bordered algebras and the wrapped Fukaya category Isabella Khan, Forbes College, Princeton University,

Monday, April 14
4:00 pm - 5:00 pm	High Energy Physics Seminar Online and In-Person Event Gravothermal Collapse of Dark Matter Halos: Observational Insights Haibo Yu, UC Riverside,

Tuesday, April 15
4:00 pm - 5:00 pm	Chemical Physics Seminar Noyes 147 (J. Holmes Sturdivant Lecture Hall) Mapping and controlling excited state potential energy surfaces with ultrafast Raman spectroscopies Renee Frontiera, Northrop Professor, Department of Chemistry, University of Minnesota,

Wednesday, April 16
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Phases with Generalized Symmetries Alison Warman, University of Oxford,
12:15 pm - 1:00 pm	Caltech/IPAC Lunch Seminar IPAC 102 (Large Conference Room) ALMA+JWST Discovers Companions at < 18 kpc Around z~3.5 Radio AGN Wuji Wang, Caltech/IPAC,
4:00 pm - 5:00 pm	ASTRONOMY COLLOQUIUM Cahill, Hameetman Auditorium Fast Radio Bursts Vikram Ravi, Assistant Professor of Astronomy, California Institute of Technology, ,

Thursday, April 17
2:45 pm - 3:45 pm	Algebra and Geometry Seminar Linde Hall 187 Moduli spaces of curves with polynomial point count Hannah Larson, Department of Mathematics, UC Berkeley,
3:00 pm - 7:00 pm	KISS Showcase and Caltech/JPL Networking Mixer Chen 100
4:00 pm - 5:00 pm	Algebra and Geometry Seminar Linde Hall 187 Gram Matrices for Isotropic Vectors Bernd Sturmfels, Department of Mathematics, UC Berkeley,
4:00 pm - 5:00 pm	Number Theory Seminar Linde Hall 387 On p-adic L-functions for GL(N) Mladen Dimitrov, Department of Mathematics, Université de Lille,
4:00 pm - 5:00 pm	Physics Colloquium Online and In-Person Event Feedback control of open quantum systems: Looking back, looking forward Hideo Mabuchi, Stanford University,

Friday, April 18
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Exploring CFT Moments David Poland, Yale University,
12:00 pm - 1:00 pm	IQIM Postdoctoral and Graduate Student Seminar East Bridge 114 Jordan-Wigner transformations on the torus Frank Verstraete, University of Ghent, University of Cambridge,
2:15 pm - 3:15 pm	TAPIR Seminar Online and In-Person Event Performance-Portable Numerical Relativity with AthenaK and Applications Hengrui Zhu, Graduate Student, Department of Physics, Princeton University,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Linde Hall 187 Tight contact structures on Seifert fibrations Hyunki Min, Department of Mathematics, UCLA,

Monday, April 21
3:00 pm - 4:00 pm	Math Teaching Seminar Linde Hall 359 Conversations about Math Teaching: Giving and receiving feedback Clara Seo, Chemistry Department, Caltech,

Wednesday, April 23
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event A stress tensor for asymptotically flat spacetime Hare Krishna, University of Texas, Austin,
12:00 pm - 1:00 pm	Logic Seminar Online Event Graphings of Arithmetical Equivalence Relations Tyler Arant, Department of Mathematics, UCLA,
12:15 pm - 1:00 pm	Caltech/IPAC Lunch Seminar IPAC 102 (Large Conference Room) The Faint and the Furious: What are the Lowest Mass Stars that Explode as Core-Collapse Supernovae? Kaustav Das, Caltech,
4:00 pm - 5:00 pm	ASTRONOMY COLLOQUIUM (Neugebauer Lecture) Cahill, Hameetman Auditorium GXN's Impact on JXZ Jonas Zmuidzinas, Merle Kingsley Professor of Physics, California Institute of Technology,
4:00 pm - 5:00 pm	Information, Geometry, and Physics Seminar Linde Hall 310 An "efficient" classical algorithm for some 3-manifold TQFT invariants Colleen Delaney, Department of Physics & Astronomy, Purdue University,
7:30 pm - 8:30 pm	Watson Lecture - Smruthi Karthikeyan: The Secret Life of Superbugs: How Antimicrobial Resistance Moves Between Humans and the Environment Beckman Auditorium

Thursday, April 24
4:00 pm - 5:00 pm	Physics Colloquium - Christy Lecture Online and In-Person Event The Growing Danger of Nuclear Weapons: What You Can Do Fred Lamb, UIUC,
4:00 pm - 5:00 pm	Number Theory Seminar Linde Hall 387 Uniform bounds for degrees of maps from curves to hyperbolic varieties Jackson Morrow, Mathematics Department, University of North Texas,

Friday, April 25
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Conformal Manifolds from Topological Gauging and Continuous SymTFTs Ho Tat Lam, Massachusetts Institute of Technology,
12:00 pm - 1:00 pm	IQIM Postdoctoral and Graduate Student Seminar East Bridge 114 Control, Readout, and Entanglement of Molecular Qubits Lewis Picard, David and Ellen Lee Postdoctoral Scholar, Endres Group,
3:00 pm - 4:00 pm	Geometry and Topology Seminar Linde Hall 187 Positive scalar curvature on trivial and nontrivial circle bundles Aditya Kumar, Department of Mathematics, John Hopkins University,

Monday, April 28
11:00 am - 12:00 pm	Applied Physics Seminar Watson 104 Manipulating Topological Phases and Correlated States in HfTe₅ Luis Jauregui, Assistant Professor, Physics, UC Irvine,
4:00 pm - 5:00 pm	Quantum Matter Seminar East Bridge 114 Nonlinear Magneto-Optics of van der Waals magnet CrSBr Liuyan Zhao, Associate Professor of Physics, Experimental Condensed Matter Physics, University of Michigan, Ann Arbor,
4:00 pm - 5:00 pm	High Energy Physics Seminar Online and In-Person Event Predicting the dark matter - baryon abundance ratio Anson Hook, University of Maryland,

Tuesday, April 29
4:00 pm - 5:00 pm	Chemical Physics Seminar Noyes 147 (J. Holmes Sturdivant Lecture Hall) Why don't plants get sunburn? Gabriela Schlau-Cohen, Professor of Chemistry, Department of Chemistry, Massachussetts Institute of Technology,
4:30 pm - 5:30 pm	Leonidas Alaoglu Memorial Lecture in Mathematics Linde Hall 310 Finite quotients of 3-manifold groups Melanie Matchett Wood, Department of Mathematics, Harvard University,

Wednesday, April 30
11:00 am - 12:00 pm	High Energy Theory Seminar Online and In-Person Event Feynman-Vernon goes cosmic: path integrals for cosmological open systems Gregory Kaplanek, Syracuse University,
12:00 pm - 1:00 pm	Logic Seminar Online Event Continuity and strictness of measurable cocycles Christian Rosendal, Department of Mathematics, University of Maryland-College Park,
12:00 pm - 1:00 pm	IQIM Postdoctoral and Graduate Student Seminar East Bridge 114 Ashvin Vishwanath, Harvard,
3:00 pm - 4:00 pm	Information, Geometry, and Physics Seminar Linde Hall 310 Kinematic varieties for massless particles Svala Sverrisdóttir, Department of Mathematics, UC Berkeley,
4:00 pm - 5:00 pm	ASTRONOMY COLLOQUIUM Cahill, Hameetman Auditorium James Webb Space Telescope Breakthroughs in Galaxy Formation Nadia Zakamska, Professor, Department of Physics & Astronomy, Johns Hopkins University,