Events Archive

Events Archive

Title: Many Body Effects of Chiral Edge Fermions - Biao Lian - Princeton

Tue, Feb 11, 2020, 1:15 pm

1+1D Chiral Fermions on the edges of 2+1D chiral topological phases are free from backscattering, which lead to quantized Hall and thermal Hall effects. Interacting chiral fermions at low energies are usually believed to form an integrable chiral Luttinger liquid. We study the integrability of N identical chiral Majorana fermion modes with...

Dark Matter in the Era of Gaia - Lina Necib - Caltech

Mon, Feb 10, 2020, 3:00 pm

The Gaia mission has provided distance and velocity measurements of over a billion stars in the Milky Way, making it the largest stellar catalog at hand. Simultaneously, recent developments in cosmological simulations have made it possible to track stars and dark matter in realistic Milky Way-like galaxies.

HET Seminar | Walter Goldberger, Yale University | "An Effective Field of Theory of Quantum Black Hole Horizons" | Bloomberg Lecture Hall, IAS | 2:30pm

Mon, Feb 10, 2020, 2:30 pm

I develop an effective theory which describes black holes with quantum mechanical horizons that is valid at scales long compared to the Schwarzschild radius but short compared to the lifetime of the black hole. The formalism allows one to calculate the quantum mechanical effects in scattering processes involving black hole asymptotic states.

Speaker(s):

Gravity Initiative Lunch, Katerina Chatziioannou | CCA "Studying neutron stars with gravitational waves"

Mon, Feb 10, 2020, 12:30 pm

Neutron stars, the most dense astrophysical bodies we know of, are at the heart of many interesting astrophysical phenomena from their birth in supernova explosions to their deaths in collisions with other dense objects.

Biophysics Seminar: Elizabeth Jerison, Stanford University: Dynamics of adaptive immunity in zebrafish| Joseph Henry Room

Mon, Feb 10, 2020, 12:00 pm

The immune responses that defend us against pathogens are driven by stochastic processes amongst populations of cells. Enormous progress in immunology over the last few decades has identified most of the components of this complex system, including the cell types and the molecules used for communication.

Audience: A free lecture open to the public.
Speaker(s):

HET Seminar | Atish Dabholkar, Abdus Salam ICTP, Trieste | "Three Avatars of Mock Modularity" | PCTS, Jadwin 407

Fri, Feb 7, 2020, 1:45 pm

Mock theta functions were introduced by Ramanujan in his famous last letter to Hardy in 1920 but were properly understood only recently with the work of Zwegers in 2002.

Speaker(s):

Gravity Group Lunch Seminar, Ivan Padilla | JHU "Cosmology Large Angular Scale Surveyor: Circular polarization at 40 GHz"

Fri, Feb 7, 2020, 12:00 pm

Large angular scale polarimetry of the CMB will provide powerful constraints on the cosmological parameters r, the tensor-to-scalar ratio, and tau, the optical depth to the epoch of reionization.

Pheno & Vino Seminar | Cara Giovanetti, Princeton | "Dynamical Friction in a Fuzzy Dark Matter Universe" | Jadwin Hall

Tue, Feb 4, 2020, 4:00 pm

Fuzzy Dark Matter (FDM) is a model of dark matter consisting of an ultralight scalar whose quantum mechanical nature is manifest at kiloparsec scales.  As such, an object moving through an FDM halo will experience a different drag force due to dynamical friction than an object passing through a classical dark matter halo.  This effect is...

Speaker(s):

HET Seminar | Ben Safdi, University of Michigan | "X-ray Search for Axions from Nearby Isolated Neutron Stars" | Bloomberg Lecture Hall (IAS)

Mon, Feb 3, 2020, 2:30 pm
Axions may be produced thermally inside the cores of neutron stars (NSs), escape the stars due to their weak interactions with matter, and subsequently convert into X-rays in the magnetic fields surrounding the NSs.
Speaker(s):

Gravity Initiative Lunch, Klaountia Pasmatsiou | CWRU “Finite size effects on the self-force”

Biophysics Seminar: Sven van Teeffelen, Department of Microbiology, Institut Pasteur, Paris, France: Control of cell volume in rod-shaped bacteria|Joseph Henry Room

Mon, Feb 3, 2020, 12:00 pm

Bacteria exhibit a high degree of intracellular macromolecular crowding. To control the level of crowding cells must increase their volumes in response to the accumulation of biomass during growth. This coordination is fundamentally not understood in any cell type.

Audience: A free lecture open to the public.
Speaker(s):

Dark Matter at Jadwin, an Informal Mini- Symposium // PCTS Seminar Room 407

Mon, Feb 3, 2020, 10:00 am

Princeton Speakers:

Cristiano Galbiati & Claudio Savarese

Oren Slone

William Terrano

Lyman Page

Chris Tully

Peter Meyers

Hongwan Liu

 

Speaker(s):

Pheno & Vino Seminar | Simon Knapen, IAS | "Soft signals at the LHC" | Jadwin 303

Tue, Jan 28, 2020, 4:00 pm

The LHC is both a Higgs and B-factory, and for both particles it will likely deliver the largest data set we will see in our lifetimes. I will discuss a few examples on how we can leverage this to search for beyond the Standard Model physics. Some ideas can be implemented now, while others rely on the phase II upgrade.

Speaker(s):

Biophysics Seminar: Dmitry Rinberg, Neuroscience Institute, NYU Langone Health: Cracking the olfactory code using behavior| Joseph Henry Room

Mon, Jan 27, 2020, 12:00 pm

Two of the most fundamental questions of sensory neuroscience are: 1) how is stimulus information represented by neuronal activity? and 2) what features of this activity are read out to guide behavior? The first question has been the subject of a large body of work across different sensory modalities.

Audience: A free lecture open to the public.
Speaker(s):

Pheno & Vino Seminar | Da Liu, UC Davis | "Composite Higgs Models at the LHC and beyond" | Jadwin 303

Tue, Jan 21, 2020, 4:00 pm

Compositeness  is an elegant way to address the hierarchy problem. In this talk, under broad assumption of partial compositeness and Higgs doublet as the pseudo-Nambu-Goldstone bosons, I will discuss about phenomenology of the spin-1 resonances and the top partners in CHMs and the relevance of  their strong interactions in the searches at the...

Speaker(s):

PCTS Special Seminar: "Physics and Energy" Robert L. Jaffe, MIT | 407 Jadwin Hall, PCTS

Tue, Jan 21, 2020, 2:00 pm

Energy is a central concept in physics.  Because energy is conserved, it is possible to understand the behavior of complex systems by tracing the flow of energy through them.  On the other hand, we humans “consume” energy, degrading it into less useful forms, as it powers modern societies.  Providing energy for the world to use in a sustainable...

Speaker(s):

Pheno & Vino Seminar | Maurizio Pienni, CERN | "Deep Learning facing the High Luminosity LHC challenge" | Jadwin 303

Tue, Jan 14, 2020, 4:00 pm

In its high-luminosity phase, the CERN Large Hadron Collider will produce x10 more data, while the computing power for data processing will not scale accordingly. Particle physicists need novel solutions to accomplish the scientific  mission of the LHC. Deep Learning has the potential to be the game changer that could solve the problem.

Speaker(s):

FPO - Sihang Liang - "Transport Properties of Topological Semimetals and Non-Symmorphic Topological Insulator"

Mon, Jan 6, 2020, 10:00 am

In this thesis, I describe research results in three topics: a test for the chiral anomaly, the anomalous Nernst effect (ANE) and the anomalous Hall effect (AHE) in Weyl and Dirac semimetals, and a novel zero-Hall state observed in the quantum limit of non-symmorphic material KHgSb.

Special Seminar-Dicke Candidate-Shaowen Chen-Columbia University-"Tunable Correlated States in Twisted Graphene""-2:00 PM-Jadwin Room 303

Tue, Dec 17, 2019, 2:00 pm to 3:00 pm

Magic angle twisted graphene hosts low energy flat band as a result of interlayer hybridization.

Speaker(s):

HEP Seminar-Dicke Candidate-Karthik Ramanathan-UIC- "Dark Matter Taking Selfies: The DAMIC Experiment"

Mon, Dec 16, 2019, 2:00 pm to 3:00 pm

The DAMIC (Dark Matter in CCDs) experiment uses silicon charge-coupled devices (CCDs), traditionally employed for imaging purposes, to detect potential ionization signals from dark matter interactions. These approx.

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