Symmergent Gravity, Seesawic New Physics, and their Experimental Signatures

Abstract

The standard model of elementary particles (SM) suffers from various problems, such as power-law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV-scale SUSY and other known cures of the UV sensitivity. In search for a remedy, in this work, it is revealed that affine curvature can emerge in a way restoring gauge symmetries explicitly broken by the UV cutoff. This emergent curvature cures the UV sensitivity and incorporates GR as symmetry-restoring emergent gravity ({\it symmergent gravity}, in brief) if a new physics sector (NP) exists to generate the Planck scale and if SM+NP is fermi-bose balanced. This setup, carrying fingerprints of trans-Planckian SUSY, predicts that gravity is Einstein (no higher-curvature terms), cosmic/gamma rays can originate from heavy NP scalars, and the UV cutoff might take right value to suppress the cosmological constant (alleviating fine-tuning with SUSY). The NP does not have to couple to the SM. In fact, NP-SM coupling can take any value from zero to ${\Lambda }_{SM}^2/{\Lambda }_{NP}^2$ if the SM is not to jump from ${\Lambda }_{SM}\approx 500\mathrm{GeV}$ to the NP scale ${\Lambda }_{NP}$. The zero coupling, certifying an undetectable NP, agrees with all the collider and dark matter bounds at present. The {\it seesawic} bound ${\Lambda }_{SM}^2/{\Lambda }_{NP}^2$, directly verifiable at colliders, implies that: {\it (i)} dark matter must have a mass $\lesssim {\Lambda }_{SM}$, {\it (ii)} Higgs-curvature coupling must be $\approx 1.3\%$, {\it (iii)} the SM RGEs must remain nearly as in the SM, and {\it (iv)} right-handed neutrinos must have a mass $\lesssim 1000\mathrm{TeV}$. These signatures serve as a concise testbed for symmergence.

32 pages, 6 figures, 1 table. v3: Added a new section, new references and a figure; Reorganized sections; Journal version

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Cited by in corpus (21)

• Black Hole Shadow in Symmergent Gravity
• Quasiperiodic oscillations, weak field lensing and shadow cast around black holes in Symmergent gravity
• Testing Symmergent gravity through the shadow image and weak field photon deflection by a rotating black hole using the M87${}^{\ast }$ and Sgr. A${}^{\ast }$ results
• Constraints on charged Symmergent black hole from shadow and lensing
• Quasinormal modes and greybody factors of symmergent black hole
• Probing Geometric Proca in Metric-Palatini Gravity with Black Hole Shadow and Photon Motion
• Thermodynamics and logarithmic corrections of symmergent black holes
• Emergent Gravity as the Eraser of Anomalous Gauge Boson Masses, and QFT-GR Concord
• Constraints on Metric-Palatini Gravity from QPO Data
• Geometric Dark Matter
• Geometric Proca with Matter in Metric-Palatini Gravity
• A quantum cosmology approach to cosmic coincidence and inflation
• Thin accretion disk images of the black hole in symmergent gravity
• Matter-antimatter asymmetry induced by non-linear electrodynamics
• Electroweak Stability and Discovery Luminosities for New Physics
• Gauge and Poincare properties of the UV cutoff and UV completion in quantum field theory
• Quasinormal Modes and Greybody Factors of Charged Symmergent Black Hole
• Dimensional Regularization in Quantum Field Theory with Ultraviolet Cutoff
• Inflation in Symmergent Metric-Palatini Gravity
• Asymptotically-Flat Black Hole Solutions in Symmergent Gravity
• Thermodynamics of Einstein-Geometric Proca AdS compact objects