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Particle Physics and Cosmology Intertwined.
1Department of Physics, Northeastern University, Boston, MA 02115-5000, USA.
Entropy (Basel, Switzerland)
|February 23, 2024
Summary
Beyond the standard model, particle physics and cosmology are deeply connected. Supergravity and string theories offer insights into dark matter, dark energy, and cosmological puzzles like the Hubble tension.
Area of Science:
- Theoretical Physics
- Cosmology
- Particle Physics
Background:
- The Standard Model describes physics at the electroweak scale but omits gravity.
- Beyond the Standard Model (BSM) physics increasingly integrates gravitational phenomena and cosmology.
- Supersymmetry, supergravity, string, and D-brane models are key BSM frameworks.
Purpose of the Study:
- To provide an overview of the intertwining of particle physics and cosmology.
- To discuss the implications for discovering sparticles at the Large Hadron Collider (LHC).
- To highlight the role of these theories in resolving cosmological anomalies and identifying dark matter and dark energy.
Main Methods:
- Review of supergravity models, including gravity-mediated supersymmetry breaking.
Main Results:
- Supergravity models predict sparticle masses at TeV scales, testable at the LHC.
- Supergravity offers candidates for dark matter and frameworks for inflation and dark energy.
- Interactions between visible and hidden sectors impact both particle physics and cosmological phenomena.
Conclusions:
- Particle physics and cosmology are intrinsically linked in addressing fundamental cosmic questions.
- Resolving cosmological phenomena like dark matter, dark energy, Hubble tension, and EDGES anomaly requires unified approaches.
- Future research will focus on sparticle discovery and understanding dark matter and dark energy.