The higgs field12/14/2023 ![]() In Section 5, we conclude and indicate further directions. In Section 4, we discuss the Higgs field and selection mechanisms in the landscape, paying particular attention to dynamical selection mechanisms inspired by studies of nonperturbative moduli dynamics. In Section 3, we discuss the consequences of the Higgs boson mass and couplings for the stability of the SM vacuum. In Section 2, we discuss the Higgs field and inflation, starting with models where the Higgs field itself serves as the inflaton, and continuing to discuss models where the Higgs field affects the generation of primordial perturbations as a spectator field. ![]() ) The references provided are intended to be illustrative, but it should be emphasized that they are by no means exhaustive. (For prior reviews at the intersection of Higgs physics and cosmology, see, e.g., in. The literature on the Higgs field and cosmology is quite extensive, and this brief review is intended to serve as an introduction to a large and rapidly developing field. In this brief review, we will discuss consequences of early universe cosmology for the physics of the Higgs field, and vice versa. In this situation, a convergence between particle physics and cosmology may be our best opportunity to probe or constrain model building, given that extremely high energies have already been achieved by the conditions in the early universe. Continuing experiments at higher energies and intensities may help to resolve these questions however, the absence of data indicating the existence of new physics at higher scales poses challenges for the design and implementation of the next generation of collider searches. While many different mechanisms (such as weak-scale supersymmetry) have been proposed to resolve the hierarchy problem, even in the context of these proposed solutions, the observed value of m h = 125 GeV does not clearly favor either a dynamical or an anthropic selection mechanism for the exact value of the Higgs boson mass, nor whether this value is natural or fine-tuned (see, e.g., in ). The “hierarchy problem” consists of the observation that the Higgs boson mass is potentially sensitive to quantum corrections, and the bare (unrenormalized) Higgs mass may therefore need to be fine-tuned in order for the physical Higgs boson mass to end up many orders of magnitude smaller than the Planck scale. So far, the Large Hadron Collider has not observed any evidence for weak-scale supersymmetry or other particles beyond the SM, leaving the physics that sets the scale of the Higgs boson mass unresolved. Despite the many recent successes, however, many deep questions remain.
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