مشخصات پژوهش

صفحه نخست /Dark energy star in gravity’s ...
عنوان Dark energy star in gravity’s rainbow
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها Modified theory of gravity; Dark energy; Gravity's rainbow; Star
چکیده The concept of dark energy can be a candidate for preventing the gravitational collapse of compact objects to singularities. According to the usefulness of gravity’s rainbow in UV completion of general relativity (by providing a new description of spacetime), it can be an excellent option to study the behavior of compact objects near phase transition regions. In this work, we obtain a modified Tolman-Openheimer-Volkof (TOV) equation for anisotropic dark energy as a fluid by solving the field equations in gravity’s rainbow. Next, to compare the results with general relativity, we use a generalized Tolman-Matese-Whitman mass function to determine the physical quantities such as energy density, radial pressure, transverse pressure, gravity profile, and anisotropy factor of the dark energy star. We evaluate the junction condition and investigate the dynamical stability of dark energy star thin shell in gravity’s rainbow. We also study the energy conditions for the interior region of this star. We show that the coefficients of gravity’s rainbow can significantly affect this non-singular compact object and modify the model near the phase transition region.
پژوهشگران بهزاد اسلام پناه (نفر سوم)، غلامحسین بردبار (نفر دوم)، عالیه باقری تودشکی (نفر اول)