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Anna Nakonieczna  - - - 
Top co-authors See all
Wojciech Skierucha

86 shared publications

Institute of Agrophysics, Polish Academy of Sciences

Andrzej Wilczek

29 shared publications

Polish Academy of Sciences, Institute of Agrophysics, Lublin, Poland

Agnieszka Szypłowska

22 shared publications

Polish Academy of Sciences, Institute of Agrophysics, Lublin, Poland

Marcin Kafarski

17 shared publications

Institute of Agrophysics, Polish Academy of Sciences

Grzegorz Janik

7 shared publications

Wroclaw University of Environmental and Life Sciences, Institute of Environmental Protection and Development, Wroclaw, Poland

16
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Publication Record
Distribution of Articles published per year 
(2011 - 2016)
Total number of journals
published in
 
8
 
Publications See all
Article 2 Reads 3 Citations Static configurations and evolution of higher dimensional brane-dilaton black hole system Anna Nakonieczna, Łukasz Nakonieczny, Rafaƚ Moderski, Marek ... Published: 15 December 2016
Journal of High Energy Physics, doi: 10.1007/JHEP12(2016)064
DOI See at publisher website ABS Show/hide abstract
Static configurations and a dynamical evolution of the system composed of a higher-dimensional spherically symmetric dilaton black hole and the Dirac-Goto-Nambu brane were investigated. The studies were conducted for three values of the dilaton coupling constant, describing the uncoupled case, the low-energy limit of the string theory and dimensionally reduced Klein-Kaluza theories. When the black hole is nonextremal, two types of static configurations are observed, a brane which intersects the black hole horizon and a brane not having any common points with the accompanying black hole. As the number of spacetime dimensions increases, the brane bend in the vicinity of the black hole disappears closer to its horizon. Dynamical evolution of the system results in an expulsion of the black hole from the brane. It proceeds faster for bigger values of the bulk spacetime dimension and thicker branes. The value of the dilatonic coupling constant does not influence neither the static configurations nor the dynamical behavior of the examined nonextremal system. In the extremal dilaton black hole case one obtains expulsion of the brane which is independent on the spacetime dimensionality and the value of the coupling constant. Dynamical studies of the configurations in the extremal case reveal that the course of evolution of the system is similar to the nonextremal one, except for a slightly earlier expulsion of the black hole from the brane.
Article 4 Reads 0 Citations Electromagnetic simulations for salinity index error estimation Andrzej Wilczek, Agnieszka Szypłowska, Marcin Kafarski, Anna... Published: 05 December 2016
Measurement Science and Technology, doi: 10.1088/1361-6501/28/1/014012
DOI See at publisher website
Article 0 Reads 5 Citations Electrical impedance measurements for detecting artificial chemical additives in liquid food products Anna Nakonieczna, Bartosz Paszkowski, Andrzej Wilczek, Agnie... Published: 01 August 2016
Food Control, doi: 10.1016/j.foodcont.2016.01.044
DOI See at publisher website
Article 0 Reads 3 Citations Scalar field as an intrinsic time measure in coupled dynamical matter-geometry systems. II. Electrically charged gravita... Anna Nakonieczna, Dong-Han Yeom Published: 26 May 2016
Journal of High Energy Physics, doi: 10.1007/jhep05(2016)155
DOI See at publisher website
PREPRINT 3 Reads 0 Citations Scalar field as an intrinsic time measure in coupled dynamical matter-geometry systems. II. Electrically charged gravita... Anna Nakonieczna, Dong-Han Yeom Published: 16 April 2016
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Investigating the dynamics of gravitational systems, especially in the regime of quantum gravity, poses a problem of measuring time during the evolution. One of the approaches to this issue is using one of the internal degrees of freedom as a time variable. The objective of our research was to check whether a scalar field or any other dynamical quantity being a part of a coupled multi-component matter-geometry system can be treated as a `clock' during its evolution. We investigated a collapse of a self-gravitating electrically charged scalar field in the Einstein and Brans-Dicke theories using the 2+2 formalism. Our findings concentrated on the spacetime region of high curvature existing in the vicinity of the emerging singularity, which is essential for the quantum gravity applications. We investigated several values of the Brans-Dicke coupling constant and the coupling between the Brans-Dicke and the electrically charged scalar fields. It turned out that both evolving scalar fields and a function which measures the amount of electric charge within a sphere of a given radius can be used to quantify time nearby the singularity in the dynamical spacetime part, in which the apparent horizon surrounding the singularity is spacelike. Using them in this respect in the asymptotic spacetime region is possible only when both fields are present in the system and, moreover, they are coupled to each other. The only nonzero component of the Maxwell field four-potential cannot be used to quantify time during the considered process in the neighborhood of the whole central singularity. None of the investigated dynamical quantities is a good candidate for measuring time nearby the Cauchy horizon, which is also singular due to the mass inflation phenomenon.
Article 0 Reads 4 Citations Scalar field as an intrinsic time measure in coupled dynamical matter-geometry systems. I. Neutral gravitational collaps... Anna Nakonieczna, Dong-Han Yeom Published: 08 February 2016
Journal of High Energy Physics, doi: 10.1007/jhep02(2016)049
DOI See at publisher website
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