Events
June
| Event Location: HENN 318 | Speaker: Ryan Jackim (Master's student)
Abstract:
Abstract: We present a catalogue of white dwarf candidates constructed from the GALEX and Gaia EDR3 catalogues.
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June
| Event Location: Hennings 318 | Speaker: Shawn Hsueh(PhD student)
My research aims to advance the development pipeline of protein and peptide therapeutics from a biophysical perspective, and covers a spectrum of contributions from methodologies to applications. For methodology contributions, I have developed an unbiased molecular dynamics (MD) simulation tool, Reservoir REMD, and integrated it into GROMACS. It has been benchmarked and shown to give the same results for different initial conformations, even when starting the simulation from a kinetically trapped initial state.
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June
| Event Location: Henn 318 | Speaker: Prof. Yanbei Chen, Caltech (remote)
Abstract:
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June
| Event Location: https://ubc.zoom.us/j/61540621166?pwd=UGZDVkpiUTVmdEY5Qmtva2REVzVrQT09 | Speaker: Stepan Fomichev(PhD student)
Motivated by the success of the momentum average (MA) approximation for the single-polaron and bipolaron cases, in this thesis we pursue the first generalization of this technique to the case of weakly-doped insulators beyond the Migdal limit. In search of a suitable starting point, we investigate the ground states of a variety of model Hamiltonians, inspired by real materials such as the rare-earth nickelates, polyacetylene, barium bismuthates, and buckminsterfullerene.
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June
| Event Location: HENN 302 | Speaker: Paul Ripoche (PhD student)
Abstract:
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June
| Event Location: HENN 302 | Speaker: Tristan Pinsonneault-Marotte (PhD student)
Abstract:
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a radio telescope that we built to map the large-scale structure of the Universe between redshifts $0.8<z<2.5$, when dark energy is expected to begin the transition from a decelerating to an accelerating phase in its expansion. It was designed to perform an intensity mapping survey using the 21 cm line of neutral hydrogen, a novel method that has the potential to enable enormous surveys of the distant Universe, but also significant observational challenges to overcome.
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May
| Event Location: https://ubc.zoom.us/j/68991164698?pwd=dzFGNVdPbSt4QldsVHNlWnJLL2ZWQT09 Passcode: 815209 | Speaker: Chris Waddell(PhD student)
Abstract: The AdS/CFT correspondence is a far-reaching equivalence between theories of quantum gravity in spacetimes with negative cosmological constant, such as anti-de Sitter (AdS) space, and lower-dimensional, non-gravitational quantum systems, such as conformal field theories (CFTs).
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May
| Event Location: https://ubc.zoom.us/j/62625300003?pwd=RTBNckgzbDk0aXhRR3NyUUEyaGV4UT09 | Speaker: Andrew Jacobs(PhD student)
Abstract: Since the 1960's a general understanding of the creation of the chemical elements in the universe has existed. However, in recent decades this understanding has undergone refinement in describing the exact astrophysical mechanisms which result in the synthesis of isotopes, particularly those heavier (i.e. more protons) than iron.
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May
| Event Location: Centre for Brain Health room 3402A or https://ubc.zoom.us/j/63777759360?pwd=SmFXcG84UWFJc3c0Z2Q4d2NMVHNCQT09 Passcode: 921391 | Speaker: Connor Bevington(PhD student)
Hybrid PET/MRI scanners are becoming more common in research and clinical settings, in particular for their ability to simultaneously acquire unique functional and structural information to probe the healthy and diseased brain. Data from both modalities need to be thoroughly processed to enhance signal-to-noise ratios (SNR), and the development and optimization of analysis algorithms is required to extract meaningful physiological quantities for medical research applications.
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April
| Event Location: Henn 318 | Speaker: Prof. Shinji Mukohyama, Yukawa Institute for Theoretical Physics, Kyoto University
TALK RECORDING AVAILABLE AT: https://drive.google.com/file/d/1rCjcB4RkIckHq3anhXzzsKDS8QRsNW4n/view?usp=share_link
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April
| Event Location: HEBB Building, Room 116 | Speaker: Dr. Simon Viel (Carleton University)
Abstract:
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April
| Event Location: HENN 201 | Speaker: Raymond Brock (Michigan State University)
Abstract:
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April
| Event Location: AMPL 311 | Speaker: Erik Sorensen (McMaster University)
Abstract: The bond-dependent Ising interaction present in the Kitaev model has recently attracted considerable attention. The attention has mostly focused on the two-dimensional honeycomb lattice version of the Kitaev model where several materials has been identified as potential realizations. However, one can also imagine realizing simpler one-dimensional Kitaev spin chains that still has a surprisingly rich structure.
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April
| Event Location: https://ubc.zoom.us/j/62482228932?pwd=a3RIU0xFY0wrSFYrYzNFbzc2ZXZ0dz09 Passcode: 199086 | Speaker: PhD student: Maryam Rostamzadeh
Liver cancer is the sixth most common cancer worldwide and radiation therapy has been a non-surgical alternative for treating patients with advanced liver cancer. Dynamic tumor tracking (DTT) has been developed to treat intra-fractionally moving liver tumors with radiation therapy. However, one of the most challenging aspects of DTT is detecting the internal tumor position, which usually relies on implanted markers as a surrogate for tumor position.
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April
| Event Location: HENN 201 | Speaker: Shohini Ghose (Wilfrid Laurier)
Abstract:
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April
| Event Location: AMPL 311 or watch online | Speaker: Leslie M. Schoop – Princeton University
Abstract: Quantum materials are hoped to change technology in various aspects. However, most of the desired applications are hindered by the lack of suitable materials. In my group we are using concepts from chemistry to understand, predict and synthesize new quantum materials. In this talk, I will show how simple concepts, such as measuring bond distances, allow us to make predictions about electronic structures of materials, which we can then use to find new quantum materials.
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April
| Event Location: HENN 318 | Speaker: Dr. Hyoyin Gan (UBC Physics & Astronomy)
Abstract:
The detection of the 21 cm signal from the Epoch of Reionisation (EoR) is challenging due to the strong astrophysical foregrounds, radio frequency interference (RFI), and ionospheric and instrumental effects. Most if not all observations of the 21 cm signal at high redshifts show so-called “excess variance” in their power spectrum, well beyond what would be expected based on the thermal noise limit. Understanding the sources of the excess is crucial for improving upper limits on the EoR signal.
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March
| Event Location: HENN 201 | Speaker: Dr. Mattia Bacca (UBC, MechEng)
Abstract:
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March
| Event Location: AMPL 311 | Speaker: Adina Luican-Mayer (University of Ottawa)
Abstract: Material systems, devices, and circuits, based on the manipulation of individual charges, spins, and photons in solid-state platforms are key for quantum technologies. The burgeoning field of quantum two-dimensional (2D) materials presents an emerging opportunity for the development of next-generation quantum technologies, while also pushing the boundaries of fundamental understanding in condensed matter.
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March
| Event Location: HENN 318 | Speaker: Dr. Tarraneh Eftekhari (Northwestern University)
Abstract:
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March
| Event Location: HENN 201 | Speaker: Marcos (Danny) Caballero (Department of Physics and Astronomy; Department of Computational Mathematics, Sciences, and Engineering; and CREATE for STEM Institute, Michigan State University; Department of Physics and Center for Computing in Science Education, University of Oslo)
Abstract:
Computing has revolutionized how modern science is done. Modern scientists use computational techniques to reduce mountains of data, to simulate impossible experiments, and to develop intuition about the behavior of complex systems. Much of the research completed by modern scientists would be impossible without the use of computing. And yet, while computing is a crucial tool of practicing scientists, most modern science curricula do not reflect its importance and utility.
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March
| Event Location: AMPL 311 or watch online | Speaker: Xie Chen (California Institute of Technology)
Abstract: Fracton order describes the peculiar phenomena that point excitations in certain strongly interacting systems either cannot move at all or can only move in a lower dimensional sub-manifold. It has recently been discovered in various lattice models, tensor gauge theories, etc. In this talk, we discuss how another powerful field theory framework -- the 2+1D Chern-Simons (CS) gauge theory -- can be used to provide new insight and explore new possibilities in 3+1D fracton order.
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March
| Event Location: Hennings 318 | Speaker: Yukun Huang(PhD student)
Over the past two decades, our knowledge of the Solar System's transneptunian region (often called the Kuiper Belt) has been gradually increasing. Observational surveys have greatly expand the inventory of TNOs, which are distant icy bodies thought to be relics from the giant planet formation and migration era. As more intricate details are unveiled in the TNO orbital and physical properties, several aspects are thought to be tightly linked to the Solar System's early formation.
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March
| Event Location: HENN 318 | Speaker: Dr. Kim-Vy Tran (School of Physics, University of New South Wales)
Abstract:
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March
| Event Location: HENN 201 | Speaker: Paul François (Université de Montréal)
Abstract:
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March
| Event Location: HENN 318 | Speaker: Sven Bachmann, UBC Mathematics
Abstract:
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March
| Event Location: HENN 318 | Speaker: Dr. Eileen Otte (Stanford University)
Abstract:
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March
| Event Location: AMPL 311 | Speaker: Frédéric Grillot (Télécom Paris/ University of New-Mexico)
Abstract: Semiconductor nanostructures with low dimensionality like quantum dots are one the best attractive solutions for achieving high performance photonic devices. When one or more spatial dimensions of the nanocrystal approach the de Broglie wavelength, nanoscale size effects create a spatial quantization of carriers along with various other phenomena based on quantum mechanics.
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March
| Event Location: HENN 318 | Speaker: Dr. Deborah Lokhorst (Herzberg Astronomy and Astrophysics)
Abstract:
The majority of baryons in the universe exist outside galaxies, in the circumgalactic (CGM) and intergalactic medium (IGM). The properties of these structures are important to understand as the material they hold is required to fuel ongoing star formation in galaxies. The process of how the gas in the CGM gets into galaxies (and is blown back out through galactic feedback) is still debated, though – in fact, the total mass of the CGM of galaxies is still unknown. This mystery remains due to the near invisibility of the CGM and IGM.
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March
| Event Location: HENN 318 | Speaker: Dr. Vir B. Bulchandani
Abstract:
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March
| Event Location: HENN 201 | Speaker: Paula R. L. Heron (University of Washington)
Abstract:
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March
| Event Location: HENN 318 | Speaker: Dr. Emily Davis
Abstract:
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March
| Event Location: Henn 318 | Speaker: Dr. Howell, University of Western Australia (remote)
TALK RECORDING AVAILABLE AT: https://drive.google.com/file/d/1DJ1iAdZ5QPBlQsxkCxyLmdvBqusGGbv7/view?usp=share_link
Abstract:
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March
| Event Location: HENN 318 | Speaker: Jessica Wolf
How are concepts of equity, diversity, inclusion and Indigeneity (EDI.I) taught and assessed in applied sciences?
Why is the teaching of these concepts important for engineers and scientists and how can competency level be meaningfully assessed?
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March
| Event Location: HENN 318 | Speaker: Dr. Henric Krawczynski, Physics Department (Washington University in St. Louis)
Abstract:
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March
| Event Location: HENN 318 | Speaker: Dr. Nicholas Rodd
Abstract:
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March
| Event Location: HENN 318 | Speaker: Dr. G. Mark Voit (Michigan State University)
Abstract:
The universe’s biggest galaxies have both vast atmospheres and supermassive central black holes. Coupling between those two components of a large galaxy couple regulates the galaxy’s star formation rate. Models of interactions between a supermassive black hole and the large-scale atmosphere suggest that the energy released as cold gas clouds accrete onto the black hole suspends the atmosphere in a state that is marginally stable to formation of cold clouds.
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March
| Event Location: HENN 318 | Speaker: Steve Choi (Cornell University)
Abstract:
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March
| Event Location: HENN 309 | Speaker: Dr. Megan Donahue (Michigan State University)
Abstract:
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March
| Event Location: HENN 201 | Speaker: Special event: Three Minute Thesis (3MT) academic competition
Three Minute Thesis (3MT)
*On Thursday March 2, 2023 from 4:00 - 5:15pm during the Department Colloquium, in HENN 201*
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March
| Event Location: HENN 318 | Speaker: Dr. Carlos Blanco (Postdoctoral Researcher, Princeton University)
Abstract:
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March
| Event Location: AMPL 311 | Speaker: John Birkbeck (Department of Condensed Matter Physics, Weizmann Institute of Science)
Abstract: In this talk, I will present a new type of scanning probe microscope, the Quantum Twisting Microscope (QTM), capable of performing local quantum interference measurements at a twistable interface between two quantum materials. Its working principle is based on a unique tip made of an atomically-thin two-dimensional material. This tip allows electrons to coherently tunnel into a sample at many locations at once, with quantum interference between these tunneling events, making it a scanning electronic interferometer.
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March
| Event Location: HENN 318 | Speaker: Dr. Matthew Liska
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February
| Event Location: UBC Centre for Brain Health Room 3402, Vancouver Zoom: https://ubc.zoom.us/j/62544295867?pwd=eURLUHJ3K1V6MVpETVpWTVppOGJOQT09 Meeting ID: 625 4429 5867 Passcode: 682315 | Speaker: Adam Dvorak (PhD student)
Myelin water imaging (MWI) is a quantitative magnetic resonance imaging (MRI) technique generally regarded as the most rigorous approach for non-invasive, in-vivo measurement of myelin content.
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February
| Event Location: HENN 318 | Speaker: Dr. Chris Matzner (University of Toronto)
Abstract:
This talk will focus on two somewhat unusual types of shock dynamics associated with core-collapse supernovae:
1. "Bells, not whistles": Some massive stars appear to undergo shock-driven outbursts before their cores collapse. I will show that nonlinear acoustics rules out a standard explanation for how these events are driven, a result that deepens the mystery of their origin.
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February
| Event Location: To be confirmed | Speaker: Dr. Philippe Landry, University of Toronto (remote)
TALK RECORDING AVAILABLE AT: https://drive.google.com/file/d/10NAGUXErm9h3xy59d5tGyJTf_MVsHtSL/view?usp=share_link
Abstract:
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February
| Event Location: HENN 318 | Speaker: Dr. Michelle Kunimoto
Abstract:
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February
| Event Location: HENN 318 | Speaker: Dr. Xue-Yang Song
Abstract:
Quantum electrodynamics in (2+1) D (QED_3) consists of relativistic Dirac fermions strongly interacting with photons. Quantum magnets and electron systems under magnetic fields, meanwhile, represent 2 correlated paradigms in magnetism. We show that from symmetry reasoning, QED_3 emerges as a robust, critical phase both in triangular spin-1/2 magnets (called Dirac spin liquid), and half-filled Chern bands of electrons under periodic magnetic fields.
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February
| Event Location: HENN 201 | Speaker: Dr. Jessie Christiansen (Harvard-Smithsonian Centre for Astrophysics)
Abstract:
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February
| Event Location: HENN 318 | Speaker: Dr. Sam Hadden, Canadian Institute for Theoretical Astrophysics (CITA)
Abstract:
Is the solar system stable? This question has garnered attention from a litany of famous scientists and mathematicians since Isaac Newton but was only properly resolved a little over a decade ago with the advent of computer hardware and algorithms capable of following the dynamical evolution of the planets for billions of years. We now know that the solar system will most likely remain stable for the remainder of the Sun’s main-sequence lifetime, though there is a ~1% chance that Mercury is destabilized and collides with Venus or the Sun.
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