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pro vyhledávání: '"Steingasser, Thomas"'
The so-called metastability bound asserts that an unnaturally small Higgs mass is a necessary condition for electroweak vacuum metastability, offering a new approach towards solving the hierarchy problem. So far, this result relies on the assumption
Externí odkaz:
http://arxiv.org/abs/2408.10297
Autor:
Steingasser, Thomas
The properties of the Higgs potential are determined by three parameters: the mass parameter, the quartic self-coupling, and a constant term. Remarkably, all three of these parameters seem subject to a significant amount of fine-tuning. All these tun
Externí odkaz:
http://arxiv.org/abs/2405.02415
Autor:
Steingasser, Thomas, Kaiser, David I.
We revisit the path integral description of quantum tunneling and show how it can be generalized to excited states. For clarity, we focus on the simple toy model of a point particle in a double-well potential, for which we perform all steps explicitl
Externí odkaz:
http://arxiv.org/abs/2402.00099
We derive the finite-temperature quantum-tunneling rate from first principles. The rate depends on both real- and imaginary-time; we demonstrate that the relevant instantons should therefore be defined on a Schwinger-Keldysh contour, and how the fami
Externí odkaz:
http://arxiv.org/abs/2310.19865
Autor:
Steingasser, Thomas, Kaiser, David I.
Publikováno v:
Physical Review D 108 (2023), 095035
Both parameters in the Higgs field's potential, its mass and quartic coupling, appear fine-tuned to near-critical values, which gives rise to the hierarchy problem and the metastability of the electroweak vacuum. Whereas such behavior appears puzzlin
Externí odkaz:
http://arxiv.org/abs/2307.10361
Autor:
Chauhan, Garv, Steingasser, Thomas
Publikováno v:
JHEP 09 (2023) 151
Right-handed neutrinos (RHN) destabilize the electroweak vacuum by increasing its decay rate. In the SM, the latter is dominated by physics at the RG scale at which $\lambda$ reaches its minimum, $\mu_*^{\text{SM}} \sim 10^{17}$ GeV. For large neutri
Externí odkaz:
http://arxiv.org/abs/2304.08542
Autor:
Khoury, Justin, Steingasser, Thomas
We consider the possibility that the gauge hierarchy is a byproduct of the metastability of the electroweak vacuum, i.e., that whatever mechanism is responsible for the latter also sets the running Higgs mass to a value smaller than its natural value
Externí odkaz:
http://arxiv.org/abs/2108.09315
Autor:
Steingasser, Thomas
Publikováno v:
J. High Energ. Phys. 2020, 153 (2020)
The concept of the moduli space allows for a simple, universally applicable description of the low-energy dynamics of topological solitons. This description is remarkably insensitive to the properties of the underlying theory, whose details only mani
Externí odkaz:
http://arxiv.org/abs/2001.09943
Autor:
Steingasser, Thomas
In der ersten Hälfte dieser Arbeit entwickle ich eine neuartige Perspektive auf die Dynamik topologischer Solitone. Die Grundlage dieser Betrachtungsweise ist eine neue Art von Feldern, die eine größtenteils von den Eigenschaften der zugrundeliege
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a2e221af68224959af9d9a089ab7d0b
Autor:
Steingasser, Thomas
eingereicht von Thomas Steingasser Graz, Univ., Dipl.-Arb., 2012
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3007::6fe3646fb54bafabcc7654037e87853a