Conformal Phase Transition in Supersymmetric QCD
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866918107954544640 |
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| author | Fujikura, Kohei Nakagawa, Shota Nakai, Yuichiro Sun, Peng Zhang, Yufei |
| author_facet | Fujikura, Kohei Nakagawa, Shota Nakai, Yuichiro Sun, Peng Zhang, Yufei |
| contents | We construct a four-dimensional supersymmetric QCD in conformal window with a marginally relevant deformation which triggers the spontaneous breaking of (approximate) scale invariance and the subsequent confinement, generating a mass gap, at an energy scale hierarchically smaller than the Planck scale without fine-tuning. We analyze the finite temperature system and show that the phase transition associated with the breaking of conformal invariance is of the strong first order. When such a phase transition takes place at a temperature of the Universe around the electroweak scale, it generates a stochastic gravitational wave (GW) background probed by future space-based interferometers, while a conformal phase transition in a dark sector at $\mathcal{O}(1)$ GeV generates GWs to explain the reported pulsar timing array signal. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_22293 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Conformal Phase Transition in Supersymmetric QCD Fujikura, Kohei Nakagawa, Shota Nakai, Yuichiro Sun, Peng Zhang, Yufei High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory We construct a four-dimensional supersymmetric QCD in conformal window with a marginally relevant deformation which triggers the spontaneous breaking of (approximate) scale invariance and the subsequent confinement, generating a mass gap, at an energy scale hierarchically smaller than the Planck scale without fine-tuning. We analyze the finite temperature system and show that the phase transition associated with the breaking of conformal invariance is of the strong first order. When such a phase transition takes place at a temperature of the Universe around the electroweak scale, it generates a stochastic gravitational wave (GW) background probed by future space-based interferometers, while a conformal phase transition in a dark sector at $\mathcal{O}(1)$ GeV generates GWs to explain the reported pulsar timing array signal. |
| title | Conformal Phase Transition in Supersymmetric QCD |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2503.22293 |