1,003 research outputs found

    Dynamical trapping and relaxation of scalar gravitational fields

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    We present a framework for nonlinearly coupled scalar-tensor theory of gravity to address both inflation and core-collapse supernova problems. The unified approach is based on a novel dynamical trapping and relaxation of scalar gravity in highly energetic regimes. The new model provides a viable alternative mechanism of inflation free from various issues known to affect previous proposals. Furthermore, it could be related to observable violent astronomical events, specifically by releasing a significant amount of additional gravitational energy during core-collapse supernovae. A recent experiment at CERN relevant for testing this new model is briefly outlined.Comment: 4 pages; version to appear in PL

    A consistent scalar-tensor cosmology for inflation, dark energy and the Hubble parameter

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    The authors are grateful for financial support to the Cruickshank Trust (CW), EPSRC/GG-Top (CW, JR), Omani Government (MA), Science Without Borders programme, CNPq, Brazil (DR), and STFC/CfFP (CW, AM, RB, JM). CW and AM acknowledge the hospitality of CERN, where this work was started. The University of Aberdeen and University of Edinburgh are charitable bodies registered in Scotland, with respective registration numbers SC013683 and SC005336.Peer reviewedPostprin

    A simplified control scheme for the Depth of Anesthesia

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    In this paper a new simplified control sell( lie for the depth of anesthesia that only requires the knowledge of the half of the model parameters is proposed. TWO control laws are designed in parallel to control the amount of the hypnotic dose and the amount of the analgesic dose. Furthermore, an identification procedure to obtain the necessary model parameters is implemented. The results were validated by simulations based on real data collected during surgeries
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