419 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Massachusetts Institute of TechnologyUS181 papers
- Vilnius UniversityLT180 papers
- Boğaziçi UniversityTR178 papers
- Deutsches Elektronen-Synchrotron DESYDE178 papers
- University of Nebraska–LincolnUS178 papers
- Bulgarian Academy of SciencesBG176 papers
- Sofia University "St. Kliment Ohridski"BG175 papers
- University of BristolGB175 papers
- University of HelsinkiFI175 papers
- University of AntwerpBE174 papers
- University of BelgradeRS174 papers
- University of Notre DameUS174 papers
20 papers · 1 filter
Finite automata with advice tapes
Uğur Küçük, A. C. Cem Say, Abuzer Yakaryılmaz
We define a model of advised computation by finite automata where the advice is provided on a separate tape. We consider several variants of the model where the advice is determini…
On physical problems that are slightly more difficult than QMA
Andris Ambainis
We study the complexity of computational problems from quantum physics. Typically, they are studied using the complexity class QMA (quantum counterpart of NP) but some natural comp…
Spatial Search on Grids with Minimum Memory
Andris Ambainis, Renato Portugal, Nikolay Nahimov
We study quantum algorithms for spatial search on finite dimensional grids. Patel et al. and Falk have proposed algorithms based on a quantum walk without a coin, with different op…
Magnetic wire-based sensors for the micro-rheology of complex fluids
L. Chevry, N. K. Sampathkumar, A. Cebers +1
We propose a simple micro-rheology technique to evaluate the viscoelastic properties of complex fluids. The method is based on the use of magnetic wires of a few microns in length…
Anomalies in radiation-collisional kinetics of Rydberg atoms induced by the effects of dynamical chaos and the double Stark resonance
N. N. Bezuglov, A. N. Klyucharev, A. A. Mihajlov +1
Radiative and collisional constants of excited atoms contain the matrix elements of the dipole transitions and when they are blocked one can expect occurring a number of interestin…
Unary languages recognized by two-way one-counter automata
Marzio De Biasi, Abuzer Yakaryilmaz
A two-way deterministic finite state automaton with one counter (2D1CA) is a fundamental computational model that has been examined in many different aspects since sixties, but we…
Studies of Variability in Proto-Planetary Nebulae: II. Light and Velocity Curve Analyses of Iras 22272+5435 and 22223+4327
Bruce J. Hrivnak, Wenxian Lu, Julius Sperauskas +3
We have carried out a detailed observational study of the light, color, and velocity variations of two bright, carbon-rich proto-planetary nebulae, IRAS 22223+4327 and 22272+5435.…
Diffusion in active magnetic colloids
Reinis Taukulis, Andrejs Cebers
Properties of active colloids of circle swimmers are reviewed. As an particular example of active magnetic colloids the magnetotactic bacteria under the action of a rotating magnet…
Dielectric properties of PLZT-x/65/35 (2 \leqslant x \leqslant 13) under mechanical stress, electric field and temperature loading
K. Pytel, J. Suchanicz, M. Livinsh +1
We investigated the effect of uniaxial pressure (0-1000 bars) applied parallely to the ac electric field on dielectric properties of PLZT-x/65/35 (2 \leqslant x \leqslant 13) ceram…
Hyperfine Paschen-Back regime in alkali metal atoms: consistency of two theoretical considerations and experiment
A. Sargsyan, G. Hakhumyan, C. Leroy +4
Simple and efficient "λ-method" and "λ/2-method" (λis the resonant wavelength of laser radiation) based on nanometric-thickness cell filled with rubidium are implemented to study t…
Nonlinear thermovoltage and thermocurrent in quantum dots
Sofia Fahlvik Svensson, Eric A Hoffmann, Natthapon Nakpathomkun +6
Quantum dots are model systems for quantum thermoelectric behavior because of the ability to control and measure the effects of electron-energy filtering and quantum confinement on…
Correlation functions, universal ratios and Goldstone mode singularities in n-vector models
J. Kaupuzs, R. V. N. Melnik, J. Rimsans
Correlation functions in the O(n) models below the critical temperature are considered. Based on Monte Carlo (MC) data, we confirm the fact stated earlier by Engels and Vogt, that…
Coherent and incoherent processes responsible for various characteristics of nonlinear magneto-optical signals in rubidium atoms
Marcis Auzinsh, Andris Berzins, Ruvin Ferber +3
We present the results of an investigation of the different physical processes that influence the shape of the nonlinear magneto-optical signals both at small magnetic field values…
On commutative weak BCK-algebras
Janis Cirulis
The class of weak BCK-algebras is obtained by weakening one of standard BCK axioms. It is known that every weak BCK-algebra is completely determined by the structure of its initial…
Real-Time Vector Automata
Özlem Salehi, Abuzer Yakaryılmaz, A. C. Cem Say
We study the computational power of real-time finite automata that have been augmented with a vector of dimension k, and programmed to multiply this vector at each step by an appro…
How to solve Fokker-Planck equation treating mixed eigenvalue spectrum?
M. Brics, J. Kaupuzs, R. Mahnke
An analogy of the Fokker-Planck equation (FPE) with the Schrödinger equation allows us to use quantum mechanics technique to find the analytical solution of the FPE in a number of…
Provable Advantage for Quantum Strategies in Random Symmetric XOR Games
Andris Ambainis, Jānis Iraids
Non-local games are widely studied as a model to investigate the properties of quantum mechanics as opposed to classical mechanics. In this paper, we consider a subset of non-local…
Exact quantum query complexity of EXACT and THRESHOLD
Andris Ambainis, Jānis Iraids, Juris Smotrovs
A quantum algorithm is exact if it always produces the correct answer, on any input. Coming up with exact quantum algorithms that substantially outperform the best classical algori…
Enhancement of level-crossing resonances in rubidium atoms by frequency control of the exciting radiation field
Marcis Auzinsh, Andris Berzins, Ruvin Ferber +4
We studied magneto-optical resonances caused by excited-state level crossings in a nonzero magnetic field. Experimental measurements were performed on the transitions of the …
Further remarks on an order for quantum observables
J. Cirulis
S. Gudder and, later, S. Pulmanova and E. Vincekova, have studied in two recent papers a certain ordering of bounded self-adjoint operators on a Hilbert space. We present some furt…