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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-6710
DTSTART:20220128T190000Z
DTEND:20220128T200000Z
DTSTAMP:20260414T144329Z
LAST-MODIFIED:20220124T145916Z
LOCATION:Chamberlin 5280
SUMMARY:UV/IR Mixing\, EFTs\, and Origami: Calculating the Higgs Mass 
 in String Theory\, Theory Seminar (High Energy/Cosmology)\, Keith Dien
 es\, University of Arizona
DESCRIPTION:In this talk\, we shall present a non-technical method of 
 understanding UV/IR mixing from a field-theoretic perspective.  We wil
 l then discuss how these ideas are ultimately realized in string theor
 y\, providing a self-contained introduction to relevant string ideas a
 s we proceed.   Finally\,  we shall present a fully string-theoretic f
 ramework for calculating one-loop Higgs masses directly from first pri
 nciples in perturbative closed string theories.  Notably\, using our f
 ramework\, we find that a gravitational modular anomaly generically re
 lates the Higgs mass to the one-loop cosmological constant\, thereby y
 ielding a string-theoretic connection between the two fundamental quan
 tities which are known to suffer from hierarchy problems in the absenc
 e of spacetime supersymmetry.  We also discuss a number of crucial iss
 ues involving the use and interpretation of regulators in UV/IR-mixed 
 theories such as string theory\, and the manner in which one can extra
 ct an EFT description from such theories. Finally\, we analyze the run
 ning of the Higgs mass within such an EFT description\, and uncover th
 e existence of a ``dual IR'' region which emerges at high energies as 
 the consequence of an intriguing scale-inversion duality symmetry.  We
  also identify a generic stringy effective potential for the Higgs fie
 lds in such theories.  Our results can therefore serve as the launchin
 g point for a rigorous investigation of gauge hierarchy problems in st
 ring theory. Note: This is a hybrid event. A zoom link will be distrib
 uted via the seminar mailing list. To join\, email the organizer.
URL:https://www.physics.wisc.edu/events/?id=6710
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