Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

High Energy Physics Seminar - Kevin Zhou (UC Berkeley) - "Electromagnetism and Gravity with Continuous Spin"

Event Type

Seminar/Symposium

Sponsor

Department of Physics

Location

Room 464

Date

Oct 4, 2024 11:00 am

Speaker

Kevin Zhou (UC Berkeley)

Contact

Brandy Koebbe

E-Mail

BKOEBBE@ILLINOIS.EDU

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Originating Calendar

Physics - High Energy Physics Seminar

Powerful general arguments allow only a few families of long-range interactions, exemplified by gauge field theories of electromagnetism and gravity. However, all of these arguments presuppose that massless fields have zero spin scale and hence a single boost invariant helicity. I will present a Lagrangian formalism describing interactions of matter particles with bosonic "continuous spin" fields with nonzero spin scale, and thereby an infinite number of helicity modes. Remarkably, physical observables such as forces and radiation emission are well approximated by familiar theories in the ultraviolet, with calculable, universal, and observable deviations at low frequencies and long distances. Furthermore, scattering amplitudes feature novel, nontrivial analytic structures which ensure they remain finite and unitary. These infrared modifications to familiar forces, long thought impossible, may shed light on the hierarchy and cosmological constant problems.

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