Baryon asymmetry from electroweak tachyonic preheating

Tranberg, Anders; Smit, Jan

doi:10.1088/1126-6708/2003/11/016

Cited by 110 publications

(194 citation statements)

References 47 publications

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“…Above the electroweak phase-transition temperature ρ vanishes and sphaleron transitions occur unsuppressed. During a tachyonic electroweak transition there are also frequent fluctuations over the barrier, as observed numerically in the susceptibility N 2 CS (t) [18,19].…”

Section: Sphaleronmentioning

confidence: 69%

“…This is around m H t = 4.8, for an instantaneous quench and m H /m W = √ 2 [19]. There are both self-interactions of the Higgs field and interactions with the gauge field.…”

Section: Tachyonic Transitionmentioning

confidence: 92%

“…Instantaneous quench As in [16,17,19], we make in this paper the approximation that the change of the potential is instantaneous in order to obtain the most dramatic effects,…”

Section: Tachyonic Transitionmentioning

confidence: 99%

“…In [14] it was shown how WMAP data constrain the parameters of a model and it was noted that it might be falsified by the LHC. The transition was studied by analytic and numerical methods [15,16,17,18,19], and the magnitude of the asymmetry generated by a form of CP violation was computed in [16,19].…”

Section: Introductionmentioning

confidence: 99%

“…The CP violating term in the Lagrangian that was used in [19] does not occur in the Standard Model. Of course, one is also interested in the CP violation from the CKM matrix.…”

Section: Introductionmentioning

confidence: 99%

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Chern-Simons and winding number in a tachyonic electroweak transition

Meulen

Sexty

Smit

et al. 2006

J. High Energy Phys.

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Abstract:We investigate the development of winding number and Chern-Simons number in a tachyonic transition in the SU(2) Higgs model, motivated by the scenario of cold electroweak baryogenesis. We find that localized configurations with approximately halfinteger winding number, dubbed half-knots, play an important role in this process. When the Chern-Simons number adjusts locally to the winding number, the half-knots can stabilize and acquire half-integer Chern-Simons number as well. We present two examples from numerical simulations: one half-knot that stabilizes early and one that gives rise to a late sphaleron transition. We also study the winding number distribution after the transition and present new results on the development of the Chern-Simons susceptibility.

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Section: Sphaleronmentioning

confidence: 69%

“…This is around m H t = 4.8, for an instantaneous quench and m H /m W = √ 2 [19]. There are both self-interactions of the Higgs field and interactions with the gauge field.…”

Section: Tachyonic Transitionmentioning

confidence: 92%

“…Instantaneous quench As in [16,17,19], we make in this paper the approximation that the change of the potential is instantaneous in order to obtain the most dramatic effects,…”

Section: Tachyonic Transitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The CP violating term in the Lagrangian that was used in [19] does not occur in the Standard Model. Of course, one is also interested in the CP violation from the CKM matrix.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Chern-Simons and winding number in a tachyonic electroweak transition

Meulen

Sexty

Smit

et al. 2006

J. High Energy Phys.

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I ran

Heath¹

2005

Encyclopedia of Bioterrorism Defense

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In 2002, President George W. Bush announced that he considered Iran, along with Iraq and North Korea as countries that threatened the global interests of the United States. He declared these three countries as the “Axis of Evil.” Iran was considered deserving of this designation because of its weapons of mass destruction programs and its support of terrorist groups. Some fear that Iran will combine its interests with other groups to uses their resources against their enemies. In order to understand the allegations and possibilities of terrorist use of biology, it is necessary to understand the difference between rhetoric and solid evidence. This article attempts to do this. Iran has traditionally maintained an advanced biotechnology program. Iran's official stance is that biological weapons is one of complete abhorrence. Iran has hosted mock inspections for future inspections and is a party to every relevant international arms control agreement. However there are still fears that Iran could arm such groups as Hizballah with biological weapons. There has been no evidence that Iran would transfer weapons to terrorist groups because such a transfer would eliminate control over the weapon. This article concludes that the threat Iran poses in the realm of bioterrorism remains negligible.

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On using cold baryogenesis to constrain the two-Higgs doublet model

Tranberg¹,

2013

J. High Energ. Phys.

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We consider the creation of the cosmological baryon asymmetry in the Two Higgs Doublet Model. We imagine a situation where the masses of the five Higgs particles and the two Higgs vevs are constrained by collider experiments, and demonstrate how the requirement of successful baryogenesis can be used to further constrain the remaining 4dimensional parameter space of the model. We numerically compute the asymmetry within the scenario of Cold Electroweak Baryogenesis, which is particularly straightforward to simulate reliably.

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Baryon asymmetry from electroweak tachyonic preheating

Cited by 110 publications

References 47 publications

Chern-Simons and winding number in a tachyonic electroweak transition

Chern-Simons and winding number in a tachyonic electroweak transition

I ran

On using cold baryogenesis to constrain the two-Higgs doublet model

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