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Quantum Curvature as Key to the Quantum Universe
Curvature is a key notion in general relativity, characterizing the local physical properties of spacetime. By contrast, the concept of curvature has...
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Space fabric wrinkles: history of observational searches for exotic structures in the Universe
The paper consistently presents the history and methodology of observational searches for cosmic strings of various nature. Cosmic strings are...
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Kaluza–Klein spacetime filled with barotropic fluid and dark energy
In this paper, we study a two-fluid cosmological model in five-dimensional Kaluza–Klein spacetime. For the two-fluid model, one fluid corresponds to...
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No asymptotic acceleration without higher-dimensional de Sitter vacua
There has recently been considerable interest in the question whether and under which conditions accelerated cosmological expansion can arise in the...
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New conformal-like symmetry of strictly massless fermions in four-dimensional de Sitter space
We present new infinitesimal ‘conformal-like’ symmetries for the field equations of strictly massless spin- s ≥ 3/2 totally symmetric tensor-spinors...
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Athena synergies in the multi-messenger and transient universe
In this paper we explore the scientific synergies between Athena and some of the key multi-messenger facilities that should be operative concurrently...
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Observations of the Large-Scale Structure of the Universe
In this chapter, we review the observations of the large-scale structure. In Sect. 2.1, we discuss the characteristics of the observed LSSs and...
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Higher dimensional Bianchi type-III string cosmological models with dark energy in Saez–Ballester scalar-tensor theory of gravitation
We have investigated the five-dimensional Bianchi type-III string cosmological models with dark energy using the Saez–Ballester scalar-tensor theory...
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How round is the quantum de Sitter universe?
We investigate the quantum Ricci curvature, which was introduced in earlier work, in full, four-dimensional quantum gravity, formulated...
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Displaced new physics at colliders and the early universe before its first second
Displaced vertices at colliders, arising from the production and decay of long-lived particles, probe dark matter candidates produced via freeze-in....
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Unveiling the gravitational universe at μ-Hz frequencies
We propose a space-based interferometer surveying the gravitational wave (GW) sky in the milli-Hz to μ-Hz frequency range. By the 2040s, the μ-Hz...
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Quantum theory of redshift in de Sitter expanding universe
The quantum theory of the Maxwell free field in Coulomb gauge on the de Sitter expanding universe is completed with the technical elements needed for...
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Topological classes of higher-dimensional black holes in massive gravity
In this paper, we study topological numbers for five-, six- and seven-dimensional anti-de Sitter black holes in the ghost-free massive gravity. We...
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Higher dimensional charged static and rotating solutions in mimetic gravity
We find new solutions to the Einstein–Maxwell equations in the presence of mimetic field in D dimensions, all of which are asymptotically anti-de...
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Investigating two-dimensional adjoint QCD on the lattice
We present our investigations of SU( N ) adjoint QCD in two dimensions with one Majorana fermion on the lattice. We determine the relevant parameter...
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Light in the Universe and the Invariance of Proper Time
The unificationUnification of electricity, magnetism, and optics (which we may abbreviate to EMO; see Chap. 3 )...
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Systematic classification of aGUT models in five dimensions: the SU(N) kinship
Asymptotic Grand Unification theories (aGUTs) in five dimensions provide a valid alternative to standard quantitative unification. We define the...
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Phase Space Analysis and Thermodynamics of Interacting Umami Chaplygin Gas in FRW Universe
In this work interacting Umami Chaplygin gas has been studied in flat FRW model of universe in context of it’s thermodynamic and dynamical behaviour....
