15 Jun 2001 | Nima Arkani-Hamed, Andrew G. Cohen, Howard Georgi
The paper proposes a new class of four-dimensional theories for natural electroweak symmetry breaking, relying neither on supersymmetry nor strong dynamics at the TeV scale. The authors introduce a novel Higgs potential that naturally arises from a second light $SU(2)$ doublet scalar, leading to a perturbative and finite Higgs mass. The mechanism is based on dimensional deconstruction, where the Higgs is an extended object in theory space, resulting in an accidental symmetry. This approach ensures that the Higgs mass is insensitive to high-energy details up to a cut-off scale much larger than a TeV, without requiring fine-tuning. The paper also discusses the construction of realistic theories, including the inclusion of fermions with Yukawa couplings to the Higgs, and highlights the phenomenological implications of these models.The paper proposes a new class of four-dimensional theories for natural electroweak symmetry breaking, relying neither on supersymmetry nor strong dynamics at the TeV scale. The authors introduce a novel Higgs potential that naturally arises from a second light $SU(2)$ doublet scalar, leading to a perturbative and finite Higgs mass. The mechanism is based on dimensional deconstruction, where the Higgs is an extended object in theory space, resulting in an accidental symmetry. This approach ensures that the Higgs mass is insensitive to high-energy details up to a cut-off scale much larger than a TeV, without requiring fine-tuning. The paper also discusses the construction of realistic theories, including the inclusion of fermions with Yukawa couplings to the Higgs, and highlights the phenomenological implications of these models.