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20232026
most citedRelic gravitons and pulsar timing arrays: a theoretical viewpoint

4 citations · 7 across the 11 of their papers we have counts for

collaborators

11 papers

hep-th2026

Hanbury-Brown Twiss effect, squeezed gravitons and the photon correlations

Massimo Giovannini

Unlike the gravitational waves classically generated by moving macroscopic masses, the diffuse backgrounds of gravitons originate most likely from zero-point fluctuations of the gr…

gr-qc2026

The initial states of high frequency gravitons

Massimo Giovannini

After distinguishing the role of classical and quantum inhomogeneities in cosmological backgrounds, we constrain the initial states of the relic gravitons as soon as the different…

astro-ph.CO2025

Invisible gravitons and large-scale magnetism

Massimo Giovannini

The large-scale limits on the relic signals of gravitational radiation complement the bounds coming from the interferometric detectors (in the audio band) and from the pulsar timin…

hep-th2025

The multiplicity distributions of the high frequency gravitons

Massimo Giovannini

When the gravitons are created thanks to the variation of the space-time curvature the multiplicity distributions quantify the probability of producing a given number of species ar…

quant-ph2025

Entropy bounds from quantum thermodynamics

Massimo Giovannini

Within an inherently classical perspective, there is always an unavoidable energy cost associated with the information deletion and this common lore is at the heart of the Landauer…

gr-qc2025

Ultra-high frequency spikes of relic gravitons

Massimo Giovannini

The maximal frequency domain of the cosmic gravitons falls in the THz region where, without conflicting with the existing phenomenological bounds, only few particles with opposite…

gr-qc2024

Gravitational wave astronomy and the expansion history of the Universe

Massimo Giovannini

The timeline of the expansion rate ultimately defines the interplay between high energy physics, astrophysics and cosmology. The guiding theme of this topical review is provided by…

hep-th2024

Quantumness of relic gravitons

Massimo Giovannini

Since the relic gravitons are produced in entangled states of opposite (comoving) three-momenta, their distributions and their averaged multiplicities must determine the maximal fr…

gr-qc2024★ 3 cited

Relic gravitons and non-stationary processes

Massimo Giovannini

Stationary processes do not accurately describe the diffuse backgrounds of relic gravitons whose correlations are homogeneous in space (i.e. only dependent upon the distance betwee…

gr-qc2023

The maximal frequency of cosmic gravitons

Massimo Giovannini

We show that the maximal frequency of cosmic gravitons must not exceed the THz domain. From a classical viewpoint, both in conventional inflationary scenarios and in bouncing model…

gr-qc2023★ 4 cited

Relic gravitons and pulsar timing arrays: a theoretical viewpoint

Massimo Giovannini

During the last three years the pulsar timing arrays reported a series of repeated evidences of gravitational radiation (with stochastically distributed Fourier amplitudes) at a be…