A landscape for the cosmological constant and the Higgs mass

Ghorbani, Parsa Hossein; Струмиа, Алессандро; Teresi, Daniele

doi:10.1007/jhep01(2020)054

Cited by 9 publications

(6 citation statements)

References 42 publications

(80 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We now consider the same phenomenon in more general theories with scalars, as a multiverse with many vacua mostly comes from scalar vacuum expectation values. As a quantum field theory example, 2 N vacua can arise if each of N scalars s has 2 different vacuum expectation values that minimise the potential [60,61].…”

Section: Dark Matter As Multiverse Relics?mentioning

confidence: 99%

Dark Matter as dark dwarfs and other macroscopic objects: multiverse relics?

Groß

Landini

Струмиа

et al. 2021

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

First order phase transitions can leave relic pockets of false vacua and their particles, that manifest as macroscopic Dark Matter. We compute one predictive model: a gauge theory with a dark quark relic heavier than the confinement scale. During the first order phase transition to confinement, dark quarks remain in the false vacuum and get compressed, forming Fermi balls that can undergo gravitational collapse to stable dark dwarfs (bound states analogous to white dwarfs) near the Chandrasekhar limit, or primordial black holes.

show abstract

Section: Dark Matter As Multiverse Relics?mentioning

confidence: 99%

Dark Matter as dark dwarfs and other macroscopic objects: multiverse relics?

Groß

Landini

Струмиа

et al. 2021

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is easy to always approximately decouple the landscape to the point of making detection prospects of the multitude of vacua almost non-existent. However it is useful to keep in mind that the more standard string theory (or field theory [47,48]) landscape is not the only option. The landscape can also be entirely contained in our patch of the Universe, either in the form of a scanning field coupled to the Higgs, as is the case for the Relaxion [30], or of feebly interacting copies of the Standard Model, as was proposed in Nnaturalness [31].…”

Section: Early History Of the Universementioning

confidence: 99%

Sliding naturalness: cosmological selection of the weak scale

D’Agnolo

Teresi

2022

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We present a cosmological solution to the electroweak hierarchy problem. After discussing general features of cosmological approaches to naturalness, we extend the Standard Model with two light scalars very weakly coupled to the Higgs and present the mechanism, which we recently introduced in a companion paper to explain jointly the electroweak hierarchy and the strong-CP problem. In this work we show that this solution can be decoupled from the strong-CP problem and discuss its possible implementations and phenomenology. The mechanism works with any standard inflationary sector, it does not require weak-scale inflation or a large number of e-folds, and does not introduce ambiguities related to eternal inflation. The cutoff of the theory can be as large as the Planck scale, both for the Cosmological Constant and for the Higgs sector. Reproducing the observed dark matter relic density fixes the couplings of the two new scalars to the Standard Model, offering a target to future axion or fifth force searches. Depending on the specific interaction of the scalars with the Standard Model, the mechanism either yields rich phenomenology at colliders or provides a novel joint solution to the strong-CP problem. We highlight what predictions are common to most realizations of cosmological selection of the weak scale and will allow to test this general framework in the near future.

show abstract

“…It is easy to always approximately decouple the landscape to the point of making detection prospects of the multitude of vacua almost non-existent. However it is useful to keep in mind that the more standard string theory (or field theory [46,47]) landscape is not the only option. The landscape can also be entirely contained in our patch of the Universe, either in the form of a scanning field coupled to the Higgs, as is the case for the Relaxion [29], or of feebly interacting copies of the Standard Model, as was proposed in Nnaturalness [30].…”

Section: General Features Of Cosmological Naturalnessmentioning

confidence: 99%

Sliding Naturalness: Cosmological Selection of the Weak Scale

D'Agnolo,

Teresi

2021

Preprint

Self Cite

View full text Add to dashboard Cite

We present a cosmological solution to the electroweak hierarchy problem. After discussing general features of cosmological approaches to naturalness, we extend the Standard Model with two light scalars very weakly coupled to the Higgs and present the mechanism, which we recently introduced in a companion paper to explain jointly the electroweak hierarchy and the strong-CP problem. In this work we show that this solution can be decoupled from the strong-CP problem and discuss its possible implementations and phenomenology. The mechanism works with any standard inflationary sector, it does not require weak-scale inflation or a large number of efolds, and does not introduce ambiguities related to eternal inflation. The cutoff of the theory can be as large as the Planck scale, both for the Cosmological Constant and for the Higgs sector. Reproducing the observed dark matter relic density fixes the couplings of the two new scalars to the Standard Model, offering a target to future axion or fifth force searches. Depending on the specific interaction of the scalars with the Standard Model, the mechanism either yields rich phenomenology at colliders or provides a novel joint solution to the strong-CP problem. We highlight what predictions are common to most realizations of cosmological selection of the weak scale and will allow to test this general framework in the near future.

show abstract

A landscape for the cosmological constant and the Higgs mass

Cited by 9 publications

References 42 publications

Dark Matter as dark dwarfs and other macroscopic objects: multiverse relics?

Dark Matter as dark dwarfs and other macroscopic objects: multiverse relics?

Sliding naturalness: cosmological selection of the weak scale

Sliding Naturalness: Cosmological Selection of the Weak Scale

Contact Info

Product

Resources

About