Results 61 to 70 of about 13,806,723 (180)
Quantum Fisher information as a signature of the superradiant quantum phase transition
New Journal of Physics, 2014 The single-mode Dicke model is well known to undergo a quantum phase transition from the so-called normal phase to the superradiant phase (hereinafter called the ‘superradiant quantum phase transition’).
Teng-Long Wang +5 more
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Friedmann cosmology with decaying vacuum density in Brans–Dicke theory
European Physical Journal C: Particles and Fields, 2021 In this paper, we study Friedmann cosmology with time-varying vacuum energy density in the context of Brans–Dicke theory. We consider an isotropic and homogeneous flat space, filled with a matter-dominated perfect fluid and a dynamical cosmological term $
C. P. Singh, Joan Solà Peracaula
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Cosmological Model with Cosmic transit behaviour in Brans-Dicke Theory
, 2023 We have constructed a dark energy cosmological model in the framework of generalized Brans Dicke theory (GBD) with a self-interacting potential. The source of dark energy is considered through a unified dark fluid (UDF) characterized by a linear equation
Naik, Z. +4 more
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Entomologia Experimentalis et Applicata, EarlyView.Actia interrupta is an important larval tachinid parasitoid during low‐density populations of the eastern spruce budworm. In the late 1980s during the outbreak collapse, Meteorus trachynotus was initially the most important species, but was replaced by A. interrupta. Host patch size and density had no impact on the parasitism rates by A.
Véronique Martel +2 more
wiley +1 more source
Ubiquitous quantum scarring does not prevent ergodicity
Nature Communications, 2021 It is generally believed that most eigenstates of quantum chaotic models are ergodic. In this work, the authors disprove this by showing that all eigenstates of the Dicke model in the chaotic regime are scarred, and that ergodicity is an ensemble ...
Saúl Pilatowsky-Cameo +5 more
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Ecological Entomology, EarlyView.In open arena assays, the response of the egg parasitoid Trissolcus basalis to substrate‐borne semiochemicals left by the host Nezara viridula was affected by the non‐host Spodoptera littoralis. Non‐host larval traces reduced T. basalis residence time spent on walking traces from gravid N. viridula females but did not affect responses to walking traces
Tuğcan Alınç +5 more
wiley +1 more source
Observation of a zero-energy excitation mode in the open Dicke model
Physical Review ResearchApproaching phase boundaries in many-body systems can give rise to intriguing signatures in their excitation spectra. Here, we explore the excitation spectrum of a Bose-Einstein condensate strongly coupled to an optical cavity and pumped by an optical ...
Anton Bölian +8 more
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Ecological Entomology, EarlyView.Cotesia glomerata polydnavirus and venom, either alone or in combination, affect colonisation by members of the arthropod community in a natural field setting. Plants damaged by P. brassicae injected with both polydnavirus and venom were colonised more often by Mamestra brassicae caterpillars, Myzus persicae aphids and aphid parasitoids compared to ...
Sarah Naomi Kalisvaart +5 more
wiley +1 more source
Ecological Entomology, EarlyView.The parasitoid‐associated polydnavirus CgPDV, but not venom alone, significantly increases the attractiveness of Pieris brassicae caterpillars to the hyperparasitoid Baryscapus galactopus at close range. Naturally parasitized caterpillars elicit stronger hyperparasitoid attraction than any injection treatment, indicating that additional factors beyond ...
Yuhan Liu +5 more
wiley +1 more source