818 research outputs found
Time Crystals from Minimum Time Uncertainty
Motivated by the Generalized Uncertainty Principle, covariance, and a minimum
measurable time, we propose a deformation of the Heisenberg algebra and show
that this leads to corrections to all quantum mechanical systems. We also
demonstrate that such a deformation implies a discrete spectrum for time. In
other words, time behaves like a crystal. As an application of our formalism,
we analyze the effect of such a deformation on the rate of spontaneous emission
in a hydrogen atom.Comment: 11 pages, to appear in Eur. Phys. J.
Remnant for all Black Objects due to Gravity's Rainbow
We argue that a remnant is formed for all black objects in gravity's rainbow.
This will be based on the observation that a remnant depends critically on the
structure of the rainbow functions, and this dependence is a model independent
phenomena. We thus propose general relations for the modified temperature and
entropy of all black objects in gravity's rainbow. We explicitly check this to
be the case for Kerr, Kerr-Newman-dS, charged-AdS, and higher dimensional
Kerr-AdS black holes. We also try to argue that a remnant should form for black
Saturn in gravity's rainbow. This work extends our previous results on remnants
of Schwarzschild black holes [ arXiv:1402.5320] and black rings
[arXiv:1409.5745].Comment: 21 pages, 13 figures, Accepted in Nucl.Phys.
Remnants of Black Rings from Gravity's Rainbow
In this paper, we investigate a spinning black ring and a charged black ring
in the context of gravity's rainbow. By incorporating rainbow functions
proposed by Amelino-Camelia, et al. in [arXiv:hep-th/9605211,
arXiv:0806.0339v2] in the metric of the black rings, a considerable
modification happens to their thermodynamical properties. We calculate
corrections to the temperature, entropy and heat capacity of the black rings.
These calculations demonstrate that the behavior of Hawking radiation changes
considerably near the Planck scale in gravity's rainbow, where it is shown that
black rings do not evaporate completely and a remnant is left as the black
rings evaporate down to Planck scale.Comment: 14 pages, 6 figure
K\"ahlerian Effective Potentials for Chern-Simons-Matter Theories
In this paper, we will calculate the effective potential for a theory of
multiple M2-branes. As the theory of multiple M2-branes can be described by a
Chern-Simons-matter theory, this will be done by calculating the K\"ahlerian
effective potential for a Chern-Simons-matter theory. This calculation will be
performed in superspace formalism. We will initially study an
Abelian Chern-Simons-matter theory, and then generalize those results to the
full non-Abelian Chern-Simons-matter theory. We will obtain explicit
expressions for the superpropagators for this theory. These superpropagators
will be used to calculate the one-loop effective potential.Comment: 15 page
Pengaruh Besarnya Modal dan Penjualan terhadap Rentabilitas pada Kp-ri “Merata” Kecamatan Purwodadi Kabupaten Purworejo
Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh yang positif dan signifikan antara: (1) besarnya modal terhadap rentabilitas pada KP-RI “MERATA. (2) penjualan terhadap rentabilitas pada KP-RI “MERATA”. (3) modal dan penjualan secara bersama-sama terhadap rentabilitas pada KP-RI “MERATA”. Analisis deskriptif menunjukkan bahwa variabel Rentabilitas dengan N=5 memiliki rata-rata sebesar 11,69 dengan standar deviasi 5,49901. Variabel Besarnya Modal dengan N=5 memiliki rata-rata Rp. 5,3838E7 dengan standar deviasi 5,45421E6. Variabel Penjualan dengan N=5 memiliki rata-rata Rp. 1,8104E8 dengan standar deviasi 2,9339E7. Berdasarkan analisis regresi ganda menunjukkan bahwa: Y= -43,779+4,095E7E7X1+1,846E-7X2. Korelasi parsial menunjukkan: (1) besarnya modal memberikan sumbangan positif sebesar 13,47% (thitung = 0,558; 0,633 > 0,05) terdadap rentabilitas, (2) penjualan memberikan sumbangan positif sebesar 47,75% (thitung = 1,353; 0,309 > 0,05) terhadap rentabilitas. Besarnya modal dan penjualan secara bersama-sama memberikan sumbangan positif sebesar 53,50% ( Rsquare = 0,535; F = 1,152; 0,465 > 0,05) terhadap rentabilitas, sedangkan 46,50% dipengaruhi faktor lain
Praktik Jasa Penitipan Mobil di Rusunawa Tanah Merah Utara Surabaya menggunakan Teori Sadd Al-Dhariah
The practice of car care services in Rusunawa Tanah Merah Utara Surabaya is a service practice that uses an ijarah contract in accordance with the pillars and conditions of ijarah in Islamic law. However, the practice of custodial services has paved the way for fraudulent service actors, fraud in the results of service payments obtained every month. Due to the initial agreement between the person in charge of the care service and the manager and all residents of the flat, 60% of the income from the service goes to the flat cash and 40% is for the person in charge of the care service. However, the fact is that the results obtained by the person in charge of the care services are greater than the cash yields of the flats, this is not in accordance with the initial agreement. Then there is the negligence of the person in charge of the care service which results in losses for the car owner. In Sadd al-Dhari'ah theory, this kind of ijarah is not allowed and must be prevented. So that, the person in charge of the care service should pay attention to the agreement that has been agreed, be responsible for his duties with trust. For managers and other internal residents of the Flats, they should participate in monitoring the performance of the care services. Car owners should give a warning to the caretaker so that they are professionally responsible
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