264 citations · 641 across the 20 of their papers we have counts for
21 papers
Axionic domain walls at Pulsar Timing Arrays: QCD bias and particle friction
Simone Blasi, Alberto Mariotti, Aäron Rase +1
The recent results from the Pulsar Timing Array (PTA) collaborations show the first evidence for the detection of a stochastic background of gravitational waves at the nHz frequenc…
Gravitational waves from defect-driven phase transitions: domain walls
Simone Blasi, Ryusuke Jinno, Thomas Konstandin +2
We discuss the gravitational wave spectrum produced by first-order phase transitions seeded by domain wall networks. This setup is important for many two-step phase transitions as…
Holographic Composite Higgs Model Building: Soft Breaking, Maximal Symmetry, and the Higgs Mass
Simone Blasi, Julian Bollig, Florian Goertz
We study the emergence and phenomenological consequences of recently proposed new structures, namely soft breaking of the Higgs shift symmetry and `maximal symmetry' of the composi…
Friction on ALP domain walls and gravitational waves
Simone Blasi, Alberto Mariotti, Aäron Rase +2
We study the early Universe evolution of axion-like particle (ALP) domain walls taking into account the effect of friction from particles in the surrounding plasma, including the c…
Gravitational Waves from Current-Carrying Cosmic Strings
Pierre Auclair, Simone Blasi, Vedran Brdar +1
Cosmic strings are predicted by many Standard Model extensions involving the cosmological breaking of a symmetry with nontrivial first homotopy group and represent a potential sour…
Domain walls seeding the electroweak phase transition
Simone Blasi, Alberto Mariotti
Topological defects can act as local impurities that seed cosmological phase transitions. In this paper we study the case of domain walls, and how they can affect the electroweak p…
Unification of Gauge Symmetries... including their breaking
Andrei Angelescu, Andreas Bally, Simone Blasi +1
In this talk, we present a minimal viable scenario that unifies the gauge symmetries of the Standard Model (SM) and their breaking sector. Our Gauge-Higgs Grand Unification setup e…
Baryogenesis via relativistic bubble expansion
Iason Baldes, Simone Blasi, Alberto Mariotti +2
We present a novel baryogenesis mechanism in which the asymmetry is sourced from heavy particles which either gain their mass or are created during bubble expansion in a strong fir…
Minimal SU(6) Gauge-Higgs Grand Unification
Andrei Angelescu, Andreas Bally, Simone Blasi +1
We present a minimal viable Gauge-Higgs Grand Unification scenario in warped space based on a bulk symmetry - unifying the gauge symmetries of the SM and their breaking sec…
Has NANOGrav found first evidence for cosmic strings?
Simone Blasi, Vedran Brdar, Kai Schmitz
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timi…
A Natural Composite Higgs via Universal Boundary Conditions
Simone Blasi, Csaba Csaki, Florian Goertz
We present a novel realization of a composite Higgs, which can naturally produce top partners above the current LHC bounds without increasing the tuning above 10%. The essential in…
Fingerprint of Low-Scale Leptogenesis in the Primordial Gravitational-Wave Spectrum
Simone Blasi, Vedran Brdar, Kai Schmitz
The dynamical generation of right-handed-neutrino (RHN) masses in the early Universe naturally entails the formation of cosmic strings that give rise to an observable signal in gra…
Axiflavon-Higgs Unification
Tommi Alanne, Simone Blasi, Florian Goertz
In this talk, a unified model of scalar particles that addresses the flavour hierarchies, solves the strong CP problem, delivers a dark matter candidate, and radiatively triggers e…
A critical look at -function singularities at large
Tommi Alanne, Simone Blasi, Nicola Andrea Dondi
We propose a self-consistency equation for the -function for theories with a large number of flavours, , that exploits all the available information in the Wilson-Fisher crit…
Bubble-resummation and critical-point methods for -functions at large
Tommi Alanne, Simone Blasi, Nicola Andrea Dondi
We investigate the connection between the bubble-resummation and critical-point methods for computing the -functions in the limit of large number of flavours, , and show that…
Softened Goldstone-Symmetry Breaking
Simone Blasi, Florian Goertz
We propose a new way of breaking the Goldstone symmetry in composite Higgs models, restoring the global symmetry in the mixings between the elementary and composite fermions by com…
The abelian gauge-Yukawa -functions at large
Tommi Alanne, Simone Blasi
We study the impact of the Yukawa interaction in the large- limit to the abelian gauge theory. We compute the coupled -functions for the system in a closed form at $\mathca…
A Common Source for Scalars: Axiflavon-Higgs Unification
Tommi Alanne, Simone Blasi, Florian Goertz
We propose a unified model of scalar particles that addresses the flavour hierarchies, solves the strong CP problem, delivers a dark matter candidate, and provides the trigger for…
The -function for Yukawa theory at large
Tommi Alanne, Simone Blasi
We compute the -function for a massless Yukawa theory in a closed form at the order in the spirit of the expansion in a large number of flavours . We f…
Extracting the mass scale of a second Higgs boson from a deviation in couplings
Simone Blasi, Stefania De Curtis, Kei Yagyu
We investigate the correlation between a possible deviation in the discovered Higgs boson couplings from the Standard Model prediction and the mass scale (…
Effects of custodial symmetry breaking in the Georgi-Machacek model at high energies
Simone Blasi, Stefania De Curtis, Kei Yagyu
The model proposed by Georgi and Machacek enables the Higgs sector to involve isospin triplet scalar fields while retaining a custodial symmetry in the potential and thus…