# Vacuum structure of an extended standard model with U(1)D symmetry
> Salim Adam A.

URL kanonis: https://discover.unhas.ac.id/publications/vacuum-structure-of-an-extended-standard-model-with-u1d-symmetry
Jurnal / Konferensi: Journal of High Energy Physics
Tahun terbit: 2026
DOI: https://doi.org/10.1007/JHEP01(2026)089
ISSN: 10298479
Kuartil SJR: Q1
Citations: 0

## Authors
- Salim Adam A.

## Abstract
A bstract In this research, we investigate the vacuum structure of an extended standard model with a U(1) D global symmetry. The scalar sector consists of two SU(2) doublets as well as one complex singlet and one real singlet, resulting in a more complicated vacuum structure compared to that of the Standard Model. We analyze various theoretical constraints, including the conditions for being bounded from below, the existence of a global minimum, and perturbativity up to the Planck scale. Additionally, we consider experimental constraints from the Higgs invisible decay. Through a detailed statistical analysis using numerical methods, we show that the extended scalar potential can accommodate a stable vacuum while satisfying both theoretical and experimental constraints for a small region of the parameter space.

## Keywords
- Physics
- Higgs boson
- Scalar (mathematics)
- Standard Model (mathematical formulation)
- Bounded function
- Planck
- Theoretical physics
- False vacuum
- Vacuum state
- Vacuum energy
- Vacuum expectation value
- Symmetry (geometry)
- Singlet state
- Global symmetry
- Scalar field
- Scalar potential
- Physics beyond the Standard Model
- Higgs sector
- Symmetry breaking
- QED vacuum
- Quantum mechanics
- Statistical physics

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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