“…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 source of primordial gravitational waves (GWs).Present efforts to model the GW signal from cosmic strings are often based on minimal models, such as, e.g., the Nambu-Goto action that describes cosmic strings as exactly one-dimensional objects without any internal structure.In order to arrive at more realistic predictions, it is therefore necessary to consider nonminimal models that make an attempt at accounting for the microscopic properties of cosmic strings.With this goal in mind, we derive in this paper the GW spectrum emitted by current-carrying cosmic strings (CCCSs), which may form in a variety of cosmological scenarios.Our analysis is based on a generalized version of the velocity-dependent one-scale (VOS) model, which, in addition to the mean velocity and correlation length of the string network, also describes the evolution of a chiral (light-like) current.As we are able to show, the solutions of the VOS equations imply a temporarily growing fractional cosmic-string energy density, Ω$_{cs}$.This results in an enhanced GW signal across a broad frequency interval, whose boundaries are determined by the times of generation and decay of cosmic-string currents.Our findings have important implications for GW experiments in the Hz to MHz band and motivate the construction of realistic particle physics models that give rise to large currents on cosmic strings.…”
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“…In models of cosmological inflation motivated by dynamical supersymmetry breaking, the potential driving inflation may be characterized by inverse powers of a scalar field. …”
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“…We consider wino and higgsino wimps that provide the local relic density and a positron excess (which implies the relic density is non-thermal in origin and important consequences for cosmological history and underlying theories), comment on how to confirm and study these issues at LHC, and on the relation to direct detection experiments. …”
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“…We point out that the Pauli blocking of neutrinos by cosmological relic neutrinos can be a significant effect. …”
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“…Using a few concrete dark matter models as examples, I illustrate how different ideas about the origin of the observed dark matter abundance in the Universe can lead to radically different phenomenological signatures and highlight the complementarity of different search channels in constraining the cosmologically viable parameter space.…”
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“…Almost stable and very long-lived particles are constrained by cosmological and astrophysical observables. In between these two extremes is a sensitivity gap for particles with moderate lifetimes. …”
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“…Scientific advances made in the 21st century contend that the forces of nature and nurture work together through an ongoing series of complex correspondences between brain and mental activity in our daily activities with others. Jung’s cosmological model of the psyche minimizes the fundamental corporeal condition of human nature and as such is critiqued and amended, influenced by the transcendental materialist theories of subjectivity inspired by Žižek, Johnston and Laplanche.…”
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“…Whether a discrepancy exists, and whether new physics is needed to resolve it, depends on details of the systematics of the object-based methods, and also on the assumptions about other cosmological parameters and which datasets are combined in the case of the all-sky methods.…”
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“…We present a covariant formalism for general multi-field system which enables us to obtain higher order action of cosmological perturbations easily and systematically. …”
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“…The sign and the size of the cosmological constant, the spectrum and the four-fermion interactions are controlled by suitable parameters.…”
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“…Some implications of the existence of duality on the cosmological constant and the definition of distance in String Theory are also suggested.…”
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“…Supersymmetry can be broken only on the world brane, a scenario that has been proposed to account for the smallness of the cosmological constant. An interesting prediction from string duality is the generation of a warp factor for conventional type II Calabi--Yau 3-fold compactifications. …”
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“…We discuss physical implications of the four-dimensional effective supergravity, that describes low-energy physics of the Randall--Sundrum model with moduli fields in the bulk and charged chiral matter living on the branes. Cosmological constant can be cancelled through the introduction of a brane Polonyi field and a brane superpotential for the 4d dilaton. …”
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“…We analyze the properties of a spontaneously broken D=4, N=4 supergravity without cosmological constant, obtained by gauging translational isometries of its classical scalar manifold. …”
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“…They depend on the value of the (negative) cosmological constant in the bulk and on the parameters of the Higgs potential, and we perform a systematic study to determine their allowed values. …”
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“…In brane inflationary scenarios, the cosmological perturbations are supposed to originate from the vacuum fluctuations of the inflaton field corresponding to the position of the brane. …”
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“…Astrophysical and cosmological measurements provides probes for Dark Matter (DM) existence but its identity and physical properties are still unknown. …”
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“…We propose a new solution to the cosmological monopole problem in which domain walls sweep away the magnetic monopoles and subsequently decay. …”
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“…Examples of numerical investigations into the formation of naked singularities, critical behavior in collapse, passage through the Cauchy horizon, chaos of the Mixmaster singularity, and singularities in spatially inhomogeneous cosmologies are discussed.…”
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“…If phi(x) does not interact with other fields of the particle physics, then the 'clothed' bosons have properties of the cosmological 'dark' matter': they cannot be detected in Earth's laboratories. …”
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