359 citations · 518 across the 15 of their papers we have counts for
16 papers
Beyond monomial -attractors
Laura Iacconi
Recent small-scale CMB data show a preference for larger scalar spectral index, , when combined with DESI data. Monomial -attractor T-models can be reconciled with the new…
UV artefacts in ultra-slow-roll models of inflation
Gerald Barnert, Laura Iacconi, Hooshyar Assadullahi +2
Within single-field inflation, primordial black hole and scalar-induced gravitational wave production from enhanced primordial perturbations typically requires a transient non-attr…
Primordial black holes from inflation: on the decoupling between large and small scales
Laura Iacconi
Primordial black holes (PBHs) can be produced from inflation if the primordial curvature power spectrum is strongly enhanced on scales much shorter than those probed by cosmic micr…
Decoupling of large-scale, adiabatic inflationary perturbations from enhanced small-scale modes at one-loop
Laura Iacconi, David Mulryne, David Seery
We reconsider back-reaction from large amplitude, short-scale perturbations onto a long wavelength adiabatic mode. In a loop expansion of the long-mode power spectrum, this back-re…
Closing in on -attractors
Laura Iacconi, Sukannya Bhattacharya, Matteo Fasiello +1
Recent observations of cosmic microwave background (CMB) anisotropies combined with large-scale structure may point towards higher values of the scalar spectral index, . This…
Primordial correlators from multi-point propagators
Andrea Costantini, Laura Iacconi, David J. Mulryne
A key step in the comparison between inflationary predictions and cosmological observations is the computation of primordial correlators. Numerical methods have been developed that…
Testing inflation on all scales: a case study with -attractors
Laura Iacconi, Michael Bacchi, Luiz Filipe Guimarães +1
A plethora of inflationary models can produce interesting small-scale phenomenology, such as enhanced scalar fluctuations leading to primordial black hole (PBH) production and larg…
Loop corrections in the separate universe picture
Laura Iacconi, David Mulryne, David Seery
In inflationary models that produce a spike of power on short scales, back-reaction of small-scale substructure onto large-scale modes is enhanced. We argue that the separate unive…
Numerical 1-loop correction from a potential yielding ultra-slow-roll dynamics
Matthew W. Davies, Laura Iacconi, David J. Mulryne
Single-field models of inflation might lead to amplified scalar fluctuations on small scales due, for example, to a transient ultra-slow-roll phase. It was argued by Kristiano …
Novel CMB constraints on the parameter in alpha-attractor models
Laura Iacconi, Matteo Fasiello, Jussi Väliviita +1
Cosmological -attractors are a compelling class of inflationary models. They lead to universal predictions for large-scale observables, broadly independent from the functional f…
Multi-field inflation with large scalar fluctuations: non-Gaussianity and perturbativity
Laura Iacconi, David J. Mulryne
Recently multi-field inflation models that can produce large scalar fluctuations on small scales have drawn a lot of attention, primarily because they could lead to primordial blac…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Revisiting small-scale fluctuations in -attractor models of inflation
Laura Iacconi, Hooshyar Assadullahi, Matteo Fasiello +1
Cosmological -attractors stand out as particularly compelling models to describe inflation in the very early universe, naturally meeting tight observational bounds from cosmic m…
Small-scale Tests of Inflation
Laura Iacconi, Matteo Fasiello, Hooshyar Assadullahi +1
We investigate small-scale signatures of the inflationary particle content. We consider the case of a light spin-2 particle sourcing primordial gravitational waves by employing an…
Interferometer Constraints on the Inflationary Field Content
Laura Iacconi, Matteo Fasiello, Hooshyar Assadullahi +2
With an energy scale that can be as high as , inflation may provide a unique probe of high-energy physics. Both scalar and tensor fluctuations generated during…
Simplified path integral for supersymmetric quantum mechanics and type-A trace anomalies
Fiorenzo Bastianelli, Olindo Corradini, Laura Iacconi
Particles in a curved space are classically described by a nonlinear sigma model action that can be quantized through path integrals. The latter require a precise regularization to…