Results 51 to 60 of about 310,647 (317)
Acknowledgement to Reviewers of Universe in 2017
Universe, 2018 Peer review is an essential part in the publication process, ensuring that Universe maintains high quality standards for its published papers.[...]
Universe Editorial Office
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Tensions between the early and late Universe [PDF]
Nature Astronomy, 2019 A Kavli Institute for Theoretical Physics workshop in July 2019 directed attention to the Hubble constant discrepancy. New results showed that it does not appear to depend on the use of any one method, team or source.
L. Verde, T. Treu, A. Riess
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Terrestrial radiative cooling: Using the cold universe as a renewable and sustainable energy source
Science, 2020 Photonic materials designed at wavelength scales have enabled a range of emerging energy technologies, from solid-state lighting to efficient photovoltaics that have transformed global energy landscapes.
Xiaobo Yin, Ronggui Yang, G. Tan, S. Fan
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General Thermodynamic Properties of FRW Universe and Heat Engine
Universe, 2022 In this work, the Friedmann–Robertson–Walker (FRW) Universe is considered a thermodynamic system, where the cosmological constant generates the thermodynamic pressure.
Ujjal Debnath
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A Comparative Study of Hegel's and Ibn Arabi's Views on the Unity of Existence [PDF]
تاریخ فلسفه اسلامی, 2023 The Oneness of Being (wahdat al-wujûd), which has a mystical root, has been proposed in the views of mystics and some philosophers. Ibn Arabî and Hegel have made this topic the focus of their discussions with different approaches.
Fatemeh Danesh pajouh +1 more
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An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5 [PDF]
Nature, 2017 Quasars are the most luminous non-transient objects known and as a result they enable studies of the Universe at the earliest cosmic epochs. Despite extensive efforts, however, the quasar ULAS J1120 + 0641 at redshift z = 7.09 has remained the only one ...
E. Bañados +17 more
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IEEE Transactions on Information Theory, 2014 A method to polarize channels universally is introduced. The method is based on combining two distinct channels in each polarization step, as opposed to Arikan's original method of combining identical channels. This creates an equal number of only two types of channels, one of which becomes progressively better as the other becomes worse. The locations
Eren Sasoglu, Lele Wang 0001
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About its own time and the mass of the universe
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021 A modification of the quantum theory of gravity in the case of a closed universe, in which the dynamics is reduced to the motion in the orbit of a group of general covariance, is proposed.
Gorobey Natalia +2 more
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On Universal Operators and Universal Pairs [PDF]
Proceedings of the Edinburgh Mathematical Society, 2018 AbstractWe study some basic properties of the class of universal operators on Hilbert spaces, and provide new examples of universal operators and universal pairs.
Tylli Hans-Olav, Schroderus Riikka
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Induced gravitational waves as a probe of thermal history of the universe [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 The scalar perturbation induced gravitational waves are a probe of the primordial density perturbation spectrum on small scales. In this paper, we show that they can also probe the thermal history of the universe. We assume the universe underwent a stage
Guillem Domènech, Shi Pi, M. Sasaki
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