Daniel I. Goldman
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Daniel I. Goldman has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
Harry L. Swinney
Center for Nonlinear Dynamics The University of Texas at Austin 78712 Austin TX
3 shared publicationsJ. B. Swift
Center for Nonlinear Dynamics The University of Texas at Austin 78712 Austin TX
3 shared publicationsSung Joon Moon
Center for Nonlinear Dynamics The University of Texas at Austin 78712 Austin TX
2 shared publicationsM. D. Shattuck
Center for Nonlinear Dynamics The University of Texas at Austin 78712 Austin TX
1 shared publication- Mark D. Shattuck
The City College of New York, Unknown, New York City, New York, United States [US
1 shared publication
Latest Publications
- Open Access
Noise, coherent fluctuations, and the onset of order in an oscillated granular fluid
We study fluctuations in a vertically oscillated layer of grains below the critical acceleration for the onset of ordered standing waves. As onset is approached, transient disordered waves with a characteristic length scale emerge and increase in power and coherence. The scaling behavior and the shift in the onset of order agrees with the Swift-Hohenberg theory for convection in fluids. However, the noise in the granular system is four orders of magnitude larger than the thermal noise in a convecting fluid, making the effect of granular noise observable even 20% below the onset of long range order.
Open AccessNoise, coherent fluctuations, and the onset of order in an oscillated granular fluid
We study fluctuations in a vertically oscillated layer of grains below the critical acceleration for the onset of ordered standing waves. As onset is approached, transient disordered waves with a characteristic length scale emerge and increase in power and coherence. The scaling behavior and the shift in the onset of order agrees with the Swift-Hohenberg theory for convection in fluids. However, the noise in the granular system is four orders of magnitude larger than the thermal noise in a convecting fluid, making the effect of granular noise observable even 20% below the onset of long range order.
- Open Access
Lattice Dynamics and Melting of a Nonequilibrium Pattern
We present a new description of nonequilibrium square patterns as a harmonically coupled crystal lattice. In a vertically oscillating granular layer, different transverse normal modes of the granular square-lattice pattern are observed for different driving frequencies ($f_d$) and accelerations. The amplitude of a mode can be further excited by either frequency modulation of $f_d$ or reduction of friction between the grains and the plate. When the mode amplitude becomes large, the lattice melts (disorders), in accord with the Lindemann criterion for melting in two-dimensions.Open AccessLattice Dynamics and Melting of a Nonequilibrium Pattern
We present a new description of nonequilibrium square patterns as a harmonically coupled crystal lattice. In a vertically oscillating granular layer, different transverse normal modes of the granular square-lattice pattern are observed for different driving frequencies ($f_d$) and accelerations. The amplitude of a mode can be further excited by either frequency modulation of $f_d$ or reduction of friction between the grains and the plate. When the mode amplitude becomes large, the lattice melts (disorders), in accord with the Lindemann criterion for melting in two-dimensions. - 14 March 2003
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 90 (10) , 104302
Lattice Dynamics and Melting of a Nonequilibrium Pattern
We present a new description of nonequilibrium square patterns as a harmonically coupled crystal lattice. In a vertically oscillating granular layer, different transverse normal modes of the granular square-lattice pattern are observed for different driving frequencies () and accelerations. The amplitude of a mode can be further excited by either frequency modulation of or reduction of friction between the grains and the plate. When the mode amplitude becomes large, the lattice melts (disorders), in accord with the Lindemann criterion for melting in two dimensions.- 14 March 2003
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 90 (10) , 104302
Lattice Dynamics and Melting of a Nonequilibrium Pattern
We present a new description of nonequilibrium square patterns as a harmonically coupled crystal lattice. In a vertically oscillating granular layer, different transverse normal modes of the granular square-lattice pattern are observed for different driving frequencies () and accelerations. The amplitude of a mode can be further excited by either frequency modulation of or reduction of friction between the grains and the plate. When the mode amplitude becomes large, the lattice melts (disorders), in accord with the Lindemann criterion for melting in two dimensions.