Search results

1

On the Accuracy of the Discretization Techniques in Approximate Relativistic Methods

100%

Woźniak D., Sadlej A. J.

Acta Physica Polonica A

|

2000

|

vol. 98

|

issue 6

673-690

EN

Several non-singular 2-component methods for relativistic calculations of the electronic structure of atoms and molecules lead to cumbersome operators which are partly defined in the coordinate representation and partly in the momentum representation. The replacement of the Fourier transform technique by the approximate resolution of identity in the basis set of approximate eigenvectors of the p^{2} operator is investigated in terms of the possible inaccuracies involved in this method. The dependence of the accuracy of the evaluated matrix elements on the composition of the subspace of these eigenvectors is studied. Although the method by itself appears to be quite demanding with respect to the faithfulness of the representation of the p^{2} operator, its performance in the context of the standard Gaussian basis sets is found to be encouragingly accurate. This feature is interpreted in terms of approximately even-tempered structure of the majority of Gaussian basis sets used in atomic and molecular calculations.

2

Application of CAE Systems in Forming of Drawpieces with Use Rubber-Pad Forming Processes / Zastosowanie Systemów CAE W Projektowaniu Procesów Tłoczenia Z Użyciem Odkształcalnych Narzędzi

81%

Woźniak D., Głowacki M., Hojny M., Pieja T.

|

issue 4

3

Time Evolution of the Magnetic Chains with Uniaxial Anisotropy

81%

Woźniak D., Drzewiński A., Kamieniarz G.

Acta Physica Polonica A

|

2015

|

vol. 127

|

issue 2

333-335

EN

In the framework of the matrix product states representation the effect of the single-ion anisotropy on the time evolution of the initial state after a sudden quench of the local magnetic field has been investigated. The overlap of the initial and time-evolved states, so called the Loschmidt echo, magnetization profiles and correlation functions are presented.

4

Relaxation Dynamics in the Spin-1 Heisenberg Antiferromagnetic Chain after a Quantum Quench of the Uniaxial Anisotropy

81%

Woźniak D., Drzewiński A., Kamieniarz G.

Acta Physica Polonica A

|

2016

|

vol. 130

|

issue 6

1395-1400

EN

In the framework of the matrix product state representation the effect of a sudden turning on of the uniaxial anisotropy on the time evolution of the Haldane state has been investigated. Depending on the value of the uniaxial anisotropy parameter, the calculations were derived within (or outside) the region where the Haldane gap survives. An exact expression for the time evolution of the Loschmidt echo has been derived and, moreover, its collapse and revival behaviour was captured. In addition, the non-local order parameter of a time evolving state was tracked, revealing two types of relaxations.

5

Non-Metallic Inclusions and Hot-Working Behaviour of Advanced High-Strength Medium-Mn Steels

81%

Woźniak D., Grajcar A., Kozłowska A.

Archives of Metallurgy and Materials

|

2016

|

issue 2

6

Numerical and Experimental Forming of Axisymmetric Products Using Methods of Deep Drawing and Flow Forming / Numeryczne I Eksperymentalne Kształtowanie Wyrobów Osiowosymetrycznych Metodą Tłoczenia Oraz Kształtowania Obrotowego

81%

Woźniak D., Głowacki M., Hojny M., Gądek T.

Archives of Metallurgy and Materials

|

2015

|

issue 4

7

Thermomechanically Rolled Medium-Mn Steels Containing Retained Austenite/ Walcowane Termomechanicznie Stale Średniomanganowe Zawierające Austenit Szczątkowy

81%

Grajcar A., Woźniak D., Skrzypczyk P.

Archives of Metallurgy and Materials

|

2014

|

issue 4

8

Influence exerted by the shape of the surfaces of working roll barrels upon the course of the MEFASS (Metal Forming Aided by Shear Stresses) rolling process

81%

Woźniak D., Świątoniowski A., Szostak J.

Archives of Metallurgy and Materials

|

2017

|

vol. 62

|

issue 1

9

Web System Dedicated to Parallel Computation for Modeling of Mushy Steel Deformation

71%

Dębiński T., Woźniak D., Głowacki M., Hojny M., Gumuła A.

Archives of Metallurgy and Materials

|

2014

|

issue 3

10

Analysis Of Die Design For The Stamping Of A Bathtub

61%

Woźniak D., Głowacki M., Hojny M., Żaba K., Nowosielski M., Kwiatkowski M.

Archives of Metallurgy and Materials

|

2015

|

issue 2

Refine search results

7 Archives of Metallurgy and Materials

3 Acta Physica Polonica A

1 2017

2 2016

3 2015

2 2014

1 2012

1 2000

10 Woźniak D.

4 Głowacki M.

4 Hojny M.

2 Drzewiński A.

2 Grajcar A.

2 Kamieniarz G.

1 Dębiński T.

1 Gumuła A.

1 Gądek T.

1 Kozłowska A.

1 Kwiatkowski M.

1 Nowosielski M.

1 Pieja T.

1 Sadlej A. J.

1 Skrzypczyk P.

1 Szostak J.

1 Świątoniowski A.

1 Żaba K.

On the Accuracy of the Discretization Techniques in Approximate Relativistic Methods

Application of CAE Systems in Forming of Drawpieces with Use Rubber-Pad Forming Processes / Zastosowanie Systemów CAE W Projektowaniu Procesów Tłoczenia Z Użyciem Odkształcalnych Narzędzi

Time Evolution of the Magnetic Chains with Uniaxial Anisotropy

Relaxation Dynamics in the Spin-1 Heisenberg Antiferromagnetic Chain after a Quantum Quench of the Uniaxial Anisotropy

Non-Metallic Inclusions and Hot-Working Behaviour of Advanced High-Strength Medium-Mn Steels

Numerical and Experimental Forming of Axisymmetric Products Using Methods of Deep Drawing and Flow Forming / Numeryczne I Eksperymentalne Kształtowanie Wyrobów Osiowosymetrycznych Metodą Tłoczenia Oraz Kształtowania Obrotowego

Thermomechanically Rolled Medium-Mn Steels Containing Retained Austenite/ Walcowane Termomechanicznie Stale Średniomanganowe Zawierające Austenit Szczątkowy

Influence exerted by the shape of the surfaces of working roll barrels upon the course of the MEFASS (Metal Forming Aided by Shear Stresses) rolling process

Web System Dedicated to Parallel Computation for Modeling of Mushy Steel Deformation

Analysis Of Die Design For The Stamping Of A Bathtub