Beyond The Standard Model
The Standard Model of particle physics is amazingly successful, yet it leaves many basic questions unanswered. From bizarre, unexplained parameters such as the cosmological constant, Higgs mass, or neutron electric dipole moment to the lack of explanation for observed phenomena such as dark matter and baryogenesis, there is strong evidence that the Standard Model must be extended. At SITP we have focused on finding solutions to these open problems to discover what these hints tell us about the underlying laws of physics.
Video Briefs
A Path to Detecting Self-Interacting Dark Matter using Astrophysical Sub-Structure
Dark matter self interactions can leave distinctive signatures on the properties of satellite…
PQ Axiverse
I construct a landscape of vacua of string theory and study the resulting ensemble of N-axion…
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In his talk at the Perimeter Institute for Theoretical Physics, Savas Dimopoulos explores the emergence of nimble, small-scale science…
Dr. Racco's research during his SITP postdoctoral appointment has been awarded the Third Prize of the 2023 Buchalter Cosmology Prize.
If the electron’s charge wasn’t perfectly round, it could reveal the existence of hidden particles. A new measurement approaches…
Peter Graham is interested in discovering the fundamental laws of nature that lie beyond the known standard model. He received an A.B./A…
Image credit: L.A. Cicero
Credit: Harrison Truong
Related Events
Compact supermassive dark-matter states act as gravitational lenses. Widely spatially separated space-based gamma-ray detectors would observe parallax of such an intervening lens with respect to cosmologically distant gamma-ray bursts (GRB). This…
In my talk, I will present recent work on the formation of primordial black hole dark matter and the resultant gravitational wave signal, drawing from recent results of https://arxiv.org/pdf/2303.02168.pdf, https://arxiv.org/pdf/…
I construct a landscape of vacua of string theory and study the resulting ensemble of N-axion effective theories. This is an incarnation of the string axiverse that is detailed enough to reveal patterns in low-energy couplings. We…
Black holes formed in the early universe can make up all or part of dark matter. I will review some scenarios for their formation, especially those that arise from common models of physics beyond the standard model. For example, the…
Marios Galanis
Pioneered in the 1950s by Hanbury Brown and Twiss, intensity interferometry refers to the correlation of light intensities incident on two telescopes. As its name suggests, it relies only on photon counting, allowing for interferometry with…
In this talk, I’ll discuss new ways of probing BSM physics using environmental effects - in particular the dense environments of stellar remnants . I‘ll present new bounds on lighter QCD axion models from white dwarves, and discuss how sourcing a…
The universal law of gravitation has undergone stringent tests for many decades over a significant range of length scales. However, on scales below a few tens of μm we are several orders of magnitude away from actually measuring gravitational…
I present a novel way to produce dark compact objects and primordial black holes. A self-interacting, dissipative dark sector can dominate the energy density of the Universe prior to Big Bang Nucleisynthesis, leading to an early era of…
Thermal relic dark matter below ∼10 GeV is excluded by cosmic microwave background data if its annihilation to visible particles is unsuppressed near the epoch of recombination. Usual model-building measures to avoid this bound involve…