10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- European Organization for Nuclear ResearchCH2.4k papers
- Universidad Autónoma de MadridES2.3k papers
- Rutherford Appleton LaboratoryGB2.3k papers
- University of BelgradeRS2.3k papers
- National and Kapodistrian University of AthensGR2.3k papers
- University of IowaUS2.3k papers
- Charles UniversityCZ2.3k papers
- The Ohio State UniversityUS2.3k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT2.2k papers
- Centre National de la Recherche ScientifiqueFR2.2k papers
21 papers · 1 filter
S-duality in String Gas Cosmology
S. Arapoglu, A. Karakci, A. Kaya
We consider a toy cosmological model in string theory involving the winding and momentum modes of (m,n) strings, i.e. bound states of m fundamental and n D-strings. The model is in…
Community Detection in Complex Networks Using Agents
Ismail Gunes, Haluk Bingol
Community structure identification has been one of the most popular research areas in recent years due to its applicability to the wide scale of disciplines. To detect communities…
Cylindrically symmetric, static strings with a cosmological constant in Brans-Dicke theory
Ozgur Delice
The static, cylindrically symmetric vacuum solutions with a cosmological constant in the framework of the Brans-Dicke theory are investigated. Some of these solutions admitting Lor…
Local cosmic strings in Brans-Dicke theory with a cosmological constant
Ozgur Delice
It is known that Vilenkin's phenomenological equation of state for static straight cosmic strings is inconsistent with Brans-Dicke theory. We will prove that, in the presence of a…
Small gaps between products of two primes
D. A. Goldston, S. W. Graham, J. Pintz +1
Let denote the number that is a product of exactly two distinct primes. We prove that This sharpens an earlier result…
Gravitational collapse and non-self similarity in the L-T relation
A. Del Popolo
We derive the luminosity-temperature relation for clusters of galaxies by means of a modification of the self-similar model to take account of angular momentum acquisition by proto…
On the cosmological mass function theory
A. Del Popolo
This paper provides, from one side, a review of the theory of the cosmological mass function from a theoretical point of view, starting from the seminal paper of Press & Shechter (…
Evolution of the cosmological mass function in a moving barrier model
A. Del Popolo
I calculate the mass function evolution in a CDM model by means of the excursion set model and an improved version of the barrier shape obtained in Del Popolo & Gambera (1998),…
On the Average Comoving Number Density of Halos
A. Del Popolo
I compare the numerical multiplicity function given in Yahagi, Nagashima & Yoshii (2004) with the theoretical multiplicity function obtained by means of the excursion set model and…
A Formal Treatment of Generalized Preferential Attachment and its Empirical Validation
Amac Herdagdelen, Eser Aygun, Haluk Bingol
Generalized preferential attachment is defined as the tendency of a vertex to acquire new links in the future with respect to a particular vertex property. Understanding which prop…
Fame Emerges as a Result of Small Memory
Haluk Bingol
A dynamic memory model is proposed in which an agent ``learns'' a new agent by means of recommendation. The agents can also ``remember'' and ``forget''. The memory size is decrease…
6D Dyonic String With Active Hyperscalars
D. C. Jong, A. Kaya, E. Sezgin
We derive the necessary and sufficient conditions for the existence of a Killing spinor in N=(1,0) gauge supergravity in six dimensions coupled to a single tensor multiplet, vector…
Optical and Infrared Emission from the AXPs and SGRs
Unal Ertan, Sirin Caliskan
We show that the irradiated accretion disk model can account for all the optical and infrared observations of the anomalous X-ray pulsars in the persistent state. Model fits do not…
Random Walkers with Shrinking Steps in d-Dimensions and Their Long Term Memory
Tonguc Rador
We study, in d-dimensions, the random walker with geometrically shrinking step sizes at each hop. We emphasize the integrated quantities such as expectation values, cumulants and m…
On the exactness of the Semi-Classical Approximation for Non-Relativistic One Dimensional Propagators
Ibrahim Semiz, Koray Duztas
For one dimensional non-relativistic quantum mechanical problems, we investigate the conditions for all the position dependence of the propagator to be in its phase, that is, the s…
Finitely Many Dirac-Delta Interactions on Riemannian Manifolds
Baris Altunkaynak, Fatih Erman, O. Teoman Turgut
This work is intended as an attempt to study the non-perturbative renormalization of bound state problem of finitely many Dirac-delta interactions on Riemannian manifolds, S^2, H^2…
Spontaneous Self-Assembly of Transcription Factor Based Gene Regulation Networks
Duygu Balcan, Alkan Kabakcioglu, Muhittin Mungan +1
We model the transcription factor based regulation network of yeast using a content-based network model that mimicks the recognition of binding motifs on the regulatory regions of…
New Supersymmetric Solutions in N=2 Matter Coupled AdS_3 Supergravities
Nihat Sadik Deger, Ozgur Sarioglu
We construct new 1/2 supersymmetric solutions in D=3, N=2, matter coupled, U(1) gauged supergravities and study some of their properties. We do this by employing a quite general su…
Community Detection in Complex Networks using Genetic Algorithm
Mursel Tasgin, Haluk Bingol
Community structure identification has been an important research topic in complex networks and there has been many algorithms proposed so far to detect community structures in com…
Friedmann Equation for Brans Dicke Cosmology
M. Arik, M. C. Calik, M. B. Sheftel
In the context of Brans-Dicke scalar tensor theory of gravitation, the cosmological Friedmann equation which relates the expansion rate of the universe to the various fractions…
Supergravity Solutions for Harmonic, Static and Flux S-Branes
Ali Kaya
We seek S-brane solutions in D=11 supergravity which can be characterized by a harmonic function H on the flat transverse space. It turns out that the Einstein's equations force H…