Anson Hook
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Anson Hook has a total of 13 co-authors. Here are the top co-authors by number of shared publications:
- Bibhushan Shakya
University of Cincinnati
2 shared publications - Gonzalo Torroba
Balseiro Institute
2 shared publications - Hitoshi Murayama
University of California
2 shared publications - John Kearney
Michigan Center for Theoretical Physics University of Michigan 48109 Ann Arbor MI USA
2 shared publications - Kathryn M. Zurek
California Institute of Technology
2 shared publications - Shamit Kachru
Stanford Institute for Theoretical Physics, Stanford University, Stanford, USA
2 shared publications
Latest Publications
- Open Access
- 7 April 2021
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2021 (4) , 1-7
Naturalness without new particles
- 7 April 2021
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2021 (4) , 1-7
Open AccessNaturalness without new particles
- Open Access
- 9 July 2015
- Published by American Physical Society (APS) in Physical Review D
- Vol. 92 (1) , 015004
Low-energy supersymmetry breaking without the gravitino problem
In models of low-energy gauge mediation, the observed Higgs mass is in tension with the cosmological limit on the gravitino mass . We present an alternative mediation mechanism of supersymmetry breaking via a term with an -inspired particle content, which we call vector mediation. The gravitino mass can be in the eV range. The sfermion masses are at the 10 TeV scale, while gauginos are around a TeV. This mechanism also greatly ameliorates the problem.- 9 July 2015
- Published by American Physical Society (APS) in Physical Review D
- Vol. 92 (1) , 015004
Open AccessLow-energy supersymmetry breaking without the gravitino problem
In models of low-energy gauge mediation, the observed Higgs mass is in tension with the cosmological limit on the gravitino mass . We present an alternative mediation mechanism of supersymmetry breaking via a term with an -inspired particle content, which we call vector mediation. The gravitino mass can be in the eV range. The sfermion masses are at the 10 TeV scale, while gauginos are around a TeV. This mechanism also greatly ameliorates the problem. - Open Access
Low-energy Supersymmetry Breaking Without the Gravitino Problem
In models of low-energy gauge mediation, the observed Higgs mass is in tension with the cosmological limit on the gravitino mass $m_{3/2} \lesssim 16$ eV. We present an alternative mediation mechanism of supersymmetry breaking via a $U(1)$ $D$-term with an $E_6$-inspired particle content, which we call "vector mediation". The gravitino mass can be in the eV range. The sfermion masses are at the 10 TeV scale, while gauginos around a TeV. This mechanism also greatly ameliorates the $\mu$-problem.Open AccessLow-energy Supersymmetry Breaking Without the Gravitino Problem
In models of low-energy gauge mediation, the observed Higgs mass is in tension with the cosmological limit on the gravitino mass $m_{3/2} \lesssim 16$ eV. We present an alternative mediation mechanism of supersymmetry breaking via a $U(1)$ $D$-term with an $E_6$-inspired particle content, which we call "vector mediation". The gravitino mass can be in the eV range. The sfermion masses are at the 10 TeV scale, while gauginos around a TeV. This mechanism also greatly ameliorates the $\mu$-problem. - Open Access
Probable or Improbable Universe? Correlating Electroweak Vacuum Instability with the Scale of Inflation
Measurements of the Higgs boson and top quark masses indicate that the Standard Model Higgs potential becomes unstable around $\Lambda_I \sim 10^{11}$ GeV. This instability is cosmologically relevant since quantum fluctuations during inflation can easily destabilize the electroweak vacuum if the Hubble parameter during inflation is larger than $\Lambda_I$ (as preferred by the recent BICEP2 measurement). We perform a careful study of the evolution of the Higgs field during inflation, obtaining different results from those currently in the literature. We consider both tunneling via a Coleman-de Luccia or Hawking-Moss instanton, valid when the scale of inflation is below the instability scale, as well as a statistical treatment via the Fokker-Planck equation appropriate in the opposite regime. We show that a better understanding of the post-inflation evolution of the unstable AdS vacuum regions is crucial for determining the eventual fate of the universe. If these AdS regions devour all of space, a universe like ours is indeed extremely unlikely without new physics to stabilize the Higgs potential; however, if these regions crunch, our universe survives, but inflation must last a few e-folds longer to compensate for the lost AdS regions. Lastly, we examine the effects of generic Planck-suppressed corrections to the Higgs potential, which can be sufficient to stabilize the electroweak vacuum during inflation.Open AccessProbable or Improbable Universe? Correlating Electroweak Vacuum Instability with the Scale of Inflation
Measurements of the Higgs boson and top quark masses indicate that the Standard Model Higgs potential becomes unstable around $\Lambda_I \sim 10^{11}$ GeV. This instability is cosmologically relevant since quantum fluctuations during inflation can easily destabilize the electroweak vacuum if the Hubble parameter during inflation is larger than $\Lambda_I$ (as preferred by the recent BICEP2 measurement). We perform a careful study of the evolution of the Higgs field during inflation, obtaining different results from those currently in the literature. We consider both tunneling via a Coleman-de Luccia or Hawking-Moss instanton, valid when the scale of inflation is below the instability scale, as well as a statistical treatment via the Fokker-Planck equation appropriate in the opposite regime. We show that a better understanding of the post-inflation evolution of the unstable AdS vacuum regions is crucial for determining the eventual fate of the universe. If these AdS regions devour all of space, a universe like ours is indeed extremely unlikely without new physics to stabilize the Higgs potential; however, if these regions crunch, our universe survives, but inflation must last a few e-folds longer to compensate for the lost AdS regions. Lastly, we examine the effects of generic Planck-suppressed corrections to the Higgs potential, which can be sufficient to stabilize the electroweak vacuum during inflation. - Open Access
- 13 January 2015
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2015 (1) , 1-21
Probable or improbable universe? Correlating electroweak vacuum instability with the scale of inflation
- 13 January 2015
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2015 (1) , 1-21
Open AccessProbable or improbable universe? Correlating electroweak vacuum instability with the scale of inflation
- 30 September 2014
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2014 (9)
Unbroken SU(2) at a 100 TeV collider
- 30 September 2014
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2014 (9)
Unbroken SU(2) at a 100 TeV collider
- Open Access
High energy neutrino telescopes as a probe of the neutrino mass mechanism
We show that measurements of the spectral shape and flavor ratios of high energy astrophysical neutrinos at neutrino telescopes can be sensitive to the details of the neutrino mass mechanism. We propose a simple model for Majorana neutrino mass generation that realizes the relevant parameter space, in which small explicit lepton number violation is mediated to the Standard Model through the interactions of a light scalar. IceCube, with about ten years of exposure time, could reveal the presence of anomalous neutrino self-interactions. Precision electroweak and lepton flavor laboratory experiments and a determination of the total neutrino mass from cosmology would provide consistency checks on the interpretation of a signal.
Open AccessHigh energy neutrino telescopes as a probe of the neutrino mass mechanism
We show that measurements of the spectral shape and flavor ratios of high energy astrophysical neutrinos at neutrino telescopes can be sensitive to the details of the neutrino mass mechanism. We propose a simple model for Majorana neutrino mass generation that realizes the relevant parameter space, in which small explicit lepton number violation is mediated to the Standard Model through the interactions of a light scalar. IceCube, with about ten years of exposure time, could reveal the presence of anomalous neutrino self-interactions. Precision electroweak and lepton flavor laboratory experiments and a determination of the total neutrino mass from cosmology would provide consistency checks on the interpretation of a signal.
- Open Access
- 6 August 2014
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2014 (8)
Emergent Fermi surfaces, fractionalization and duality in supersymmetric QED
- 6 August 2014
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2014 (8)
Open AccessEmergent Fermi surfaces, fractionalization and duality in supersymmetric QED
- Open Access
- 4 November 2013
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2013 (11) , 1-29
Supersymmetric defect models and mirror symmetry
We study supersymmetric field theories in three space-time dimensions doped by various configurations of electric charges or magnetic fluxes. These are supersymmetric avatars of impurity models. In the presence of additional sources such configurations are shown to preserve half of the supersymmetries. Mirror symmetry relates the two sets of configurations. We discuss the implications for impurity models in 3d $ \mathcal{N} $ = 4 QED with a single charged hypermultiplet (and its mirror, the theory of a free hypermultiplet) as well as 3d $ \mathcal{N} $ = 2 QED with one flavor and its dual, a supersymmetric Wilson-Fisher fixed point. Mirror symmetry allows us to find backreacted solutions for arbitrary arrays of defects in the IR limit of $ \mathcal{N} $ = 4 QED. Our analysis, complemented with appropriate string theory brane constructions, sheds light on various aspects of mirror symmetry, the map between particles and vortices and the emergence of ground state entropy in QED at finite density.- 4 November 2013
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2013 (11) , 1-29
Open AccessSupersymmetric defect models and mirror symmetry
We study supersymmetric field theories in three space-time dimensions doped by various configurations of electric charges or magnetic fluxes. These are supersymmetric avatars of impurity models. In the presence of additional sources such configurations are shown to preserve half of the supersymmetries. Mirror symmetry relates the two sets of configurations. We discuss the implications for impurity models in 3d $ \mathcal{N} $ = 4 QED with a single charged hypermultiplet (and its mirror, the theory of a free hypermultiplet) as well as 3d $ \mathcal{N} $ = 2 QED with one flavor and its dual, a supersymmetric Wilson-Fisher fixed point. Mirror symmetry allows us to find backreacted solutions for arbitrary arrays of defects in the IR limit of $ \mathcal{N} $ = 4 QED. Our analysis, complemented with appropriate string theory brane constructions, sheds light on various aspects of mirror symmetry, the map between particles and vortices and the emergence of ground state entropy in QED at finite density. - Open Access
- 17 October 2013
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2013 (10) , 1-26
Minimal signatures of naturalness
We study the naturalness problem using a model independent bottom up approach by considering models where only the interaction terms needed to cancel the Higgs quadratic divergences are present. If quadratic divergences are canceled by terms linear in the Higgs field, then the collider phenomenology is well covered by current electroweakino and fourth generation searches. If quadratic divergences are canceled by terms bilinear in the Higgs field, then the signatures are highly dependent on the quantum numbers of the new particles. Precision Higgs measurements can reveal the presence of new particles with either vevs or Standard Model charges. If the new particles are scalar dark matter candidates, their direct and indirect detection signatures will be highly correlated and within the reach of XENON100 and Fermi. Observation at one of these experiments would imply observation at the other one. Observable LHC decay channels can also arise if the new particles mix with lighter states. This decay channel involves only the Higgs boson and not the gauge bosons. Observation of such decays would give evidence that the new particle is tied to the naturalness problem.
- 17 October 2013
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2013 (10) , 1-26
Open AccessMinimal signatures of naturalness
We study the naturalness problem using a model independent bottom up approach by considering models where only the interaction terms needed to cancel the Higgs quadratic divergences are present. If quadratic divergences are canceled by terms linear in the Higgs field, then the collider phenomenology is well covered by current electroweakino and fourth generation searches. If quadratic divergences are canceled by terms bilinear in the Higgs field, then the signatures are highly dependent on the quantum numbers of the new particles. Precision Higgs measurements can reveal the presence of new particles with either vevs or Standard Model charges. If the new particles are scalar dark matter candidates, their direct and indirect detection signatures will be highly correlated and within the reach of XENON100 and Fermi. Observation at one of these experiments would imply observation at the other one. Observable LHC decay channels can also arise if the new particles mix with lighter states. This decay channel involves only the Higgs boson and not the gauge bosons. Observation of such decays would give evidence that the new particle is tied to the naturalness problem.