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The Neuhauser group works to achieve a fundamental theoretical understanding of chemistry on a microscopic level, in both quantum dynamics of molecules and genetic-networks.
Presently, we are working on three primary directions.
Our first research subject is to develop new paradigms for molecular
electronics ("molectronics"), a field aiming to reduce the size of molecular
circuits to single molecule.
We have developed a simple interference-based method
for controlling current transfer through small molecules.
(PDF,
PDF,
PDF)
We are aiming at
better understanding of such molecules, when they are stucked together,
into wires, sheets, and three-dimensional ordered and disordered.
More generally, we are interested in the influence of the current and
voltage on the chemistry.
Our next subject is finding new ways of controlling molecular motion with lasers, with the aim of extracting useful information about molecular structure and intermolecular distances. For this we are developing new paradigms based on dynamical effects such as wave motion and solitons in molecules.
Our third research direction is in a distinct field, genetic networks, where we work to model biologically important gene-protein reactions and how they the final dynamical properties are related to the individual steps. We have two separate goals: first, understanding specific mechanism and the best method for describing such reactions. A more long term goal is to see how genetic networks can be externally influenced.
Publications
- D. Neuhauser, Photon Interferometry for Heavy Ion Collisions,
Phys.Lett.B 182, 289 (1986).
- D. Neuhauser, S.E. Koonin and K. Langanke, Calculations of Atoms
and Molecular Chains in Strong Magnetic Fields, Phys.Rev.A.
65, 2084 (1986).
- D. Neuhauser, S.E. Koonin and K. Langanke, Structure of Matter in
Strong Magnetic Fields, Phys.Rev.A. 36, 4163 (1987).
- D. Neuhauser and S.E. Koonin, Bremsstrahlung in Heavy Ion
Collisions, Nucl.Phys.A. 462 163 (1987).
- D. Neuhauser and M. Baer, Arrangement Channel Approach to
Exchange Processes: Quasi-symmetric Representations, Phys.Rev.C.
38, 1571 (1988).
- D. Neuhauser and M. Baer, Arrangement Approach to Reactive
Processes: Generalizations with New Insight, J.Chem.Phys. 88,
2855 (1988).
- D. Neuhauser and M. Baer, The Time Dependent Schrödinger
Equation: Application of Absorbing Boundary Conditions,
J.Chem.Phys. 90, 4351 (1989).
- D. Neuhauser and M. Baer, The Application of Wavepackets to
Reactive Atom-Diatom Systems: A New Approach, J.Chem.Phys.
91, 4651 (1989).
- D. Neuhauser, M. Baer, R.S. Judson, and D.J. Kouri,
Time-Dependent Three-Dimensional Body Frame Quantal Wavepacket
Treatment of the Atomic Hydrogen + Molecular Hydrogen Exchange Reaction
on the Liu-Siegbahn-Truhlar-Horowitz (LSTH) Surface, J.Chem.Phys.
90, 5882, (1989).
- D. Neuhauser and M. Baer, Wavepacket Approach to Treat Low Energy
Reactive Systems: Accurate Probabilities for H + H2 , J.Phys.Chem. 93, 2872 (1989).
- M. Baer, C.Y. Ng and D. Neuhauser, A New Version of the Reactive
Infinite Order Sudden Approximation: The Incorporation of Optical
Potentials, Chem.Phys.Letts. 169, 534 (1990).
- Z. Henis, S. Eliezer, D. Neuhauser and M. Baer, Quantum
Mechanical Treatment of Muon Transfer Process - A Heavy Particle
Exchange Approach, Phys.Rev.A. 41, 4791 (1990).
- D. Neuhauser, M. Baer and D.J. Kouri, The Application of Optical
Potentials for Reactive Scattering: A Case Study, J.Chem.Phys.
93, 2499 (1990).
- D. Neuhauser, M. Baer, R.S. Judson, and D.J. Kouri,
Time-Dependent Wavepacket Approach to Atom-Diatom Reactive Collision
Probabilities-Theory and Application to the H + H2 System,
J.Chem.Phys. 93, 312 (1990).
- R.S. Judson, D.J. Kouri, D. Neuhauser and M. Baer, Time-Dependent
Wavepacket Method for the Complete Determination of S-Matrix Elements
for Reactive Molecular Collisions in 3-Dimensions, Phys.Rev.A.
42, 351 (1990).
- D. Neuhauser and M. Baer, A New Accurate (Time Independent)
Method for Treating Three-Dimensional Reactive Collisions: The
Application of Optical Potentials and Projection Operators,
J.Chem.Phys. 92, 3419 (1990).
- D. Neuhauser and M. Baer, A New Time Independent Approach to the
Study of Atom-Diatom Reactive Collisions: Theory and Applications,
J.Phys.Chem. 94, 186 (1990).
- D. Neuhauser, State-to-State Reactive Probabilities from
Single-Arrangement Propagation with Absorbing Potentials,
J.Chem.Phys. 93, 7836 (1990).
- D. Neuhauser,Eigenfunctions from Wavepackets: Time to Energy
Resolution, J.Chem.Phys. 93, 2611(1990).
- D. Neuhauser, M. Baer, R.S. Judson, and D.J. Kouri, Tme-Dependent
(Wavepacket) Quantum Approach to Reactive Scattering: Vibrationally
Resolved Reaction Probabilities for F + H2 ®HF + H, Chem.Phys.Letts. 169, 372
(1990).
- D. Neuhauser, Time-Dependent Scattering in the Presence of Narrow
Resonance: Avoiding Long Propagation Times, J.Chem.Phys. 95,
4927 (1991).
- D. Neuhauser, R.S. Judson, A. Persky, Inelastic Scattering
Probabilities Above the Breakup Threshold, Chem.Phys.Letts.
181, 151 (1991).
- D. Neuhauser, R.S. Judson, Reactive Scattering in a Mixed
Quantum-Classical Paradigm, Chem.Phys.Letts. 179, 385 (1991).
- D. Neuhauser, R.S. Judson, R.E. Jaffe, M. Baer and D.J. Kouri,
Total Integral Reactive Cross Sections for F + H2 HF + H: Comparison of
Converged Quantum, Quasi-classical Trajectory and Experimental Results,
Chem.Phys.Letts. 176, 546 (1991).
- D. Neuhauser, M. Baer, R.S. Judson, and D.J. Kouri, The
Application of Time-Dependent Wavepacket Methods to Reactive Scattering,
Comp.Phys.Comm. 63, 460 (1991).
- P. Gross, D. Neuhauser and H. Rabitz, Optimal Control of
Unimolecular Reactions in the Collisional Regime,
J.Chem.Phys. 94, 1158 (1991).
- P. Gross, D. Neuhauser and H. Rabitz, Optimal Control of Curve
Crossing Systems, J.Chem.Phys. 96, 2041 (1992).
- D. Neuhauser, Reactive Scattering with Absorbing Potentials in
General Coordinate Systems, Chem.Phys.Lett. 200, 173
(1992).
- D. Neuhauser, R.S. Judson, D.J. Kouri, D.E. Adelman, N.S. Shafer,
D.A. Kliner and R.N.Zare, State-to-State Rates for the D+H2 (v = 1,
j=1)®HD(v', j') + H Reaction:
Predictions and Measurements, Science 257, 519
(1992).
- D. Neuhauser, R.S. Judson, M. Baer and D.J. Kouri, Time-Dependent
Wavepacket Approach to Reactive Scattering using Arrangement Decoupling
Absorbing Potentials, in Advanced Molecular Vibrations and Collision
Dynamics,Vol. 2. J.M. Bowman Ed. JAI Press, Greenwich, CT) .
- P. Gross, D. Neuhauser and H. Rabitz, Teaching Lasers to Control
Molecules in the Presence of Laboratory Field Uncertainty and
Measurement Imprecision, J.Chem.Phys. 98, 4557
(1993).
- P. Gross, D. Neuhauser and H. Rabitz, Beyond the Bloch Equations:
A wave function-based approach to selective excitation in condensed
media, J.Chem.Phys. 98, 9650 (1993).
- D. Neuhauser and H. Rabitz, Paradigms and Algorithms for
Controlling Molecular Motion, Accounts.Chem.Res. 26, 496
(1993).
- A. Lazarides, D. Neuhauser and H. Rabitz, Sensitivity of the F +
H2
reaction probability to the potential surface, J. Chem. Phys.
99, 6653 (1993).
- D. Neuhauser, Circumventing the Heisenberg Principle: A Rigorous
Demonstration of Filter-Diagonalization on a LiCN model. J. Chem.
Phys. 100, 5076 (1994).
- D. Neuhauser, Molecular Scattering, Very Short Range Imaginary
Potentials, Absorbing Potentials, and Flux-Amplitude Expressions. J.
Chem. Phys. 103, 8513 (1995).
- D. Neuhauser, Fully-Quantal Initial-State-Selected Reaction
Probabilities ( J = 0) for a four-atom system: H2 (v = 0,1, j = 0) + OH
(v = 0,1, j =0) --> H + H2O. J. Chem. Phys. (communication)
100, 9272 (1994).
- D. M. Charutz and D. Neuhauser, Electronic Structure via the
Auxiliary-Field Monte-Carlo Algorithm, J. Chem. Phys. 102,
4495 (1995).
- M. R. Wall and D. Neuhauser, Extraction, through
filter-diagonalization, of general quantum eigenvalues or classical
normal mode frequencies from a small number of residues or a short time
segment of a signal. I. Theory and application to a quantum -dynamics
model. J. Chem. Phys. 102, 8011 (1995).
- J. W. Pang and D. Neuhauser, Application of Generalized
Filter-Diagonalization to Extract Instantaneous Normal Modes, Chem.
Phys. Lett. 252, 173 (1996).
- G. J. Kroes, G. Wiesenekker, E. J. Baerends, R. C. Mowrey and D.
Neuhauser, Dissociative chemisorption of H2( on Cu(100) - a
four-dimensional study of the effect of parallel translational motion on
the reaction dynamics. J. Chem. Phys. 105, 5979
(1996).
- G. J. Kroes and D. Neuhauser, Performance of a time-independent
scattering wave packet technique using real operators and wavefunctions,
J. Chem. Phys. 105, 8609 (1996).
- G. J. Kroes and D. Neuhauser, Avoiding long propagation times in
wavepacket calculations on scattering with resonances: The Lancosz
Method, J. Chem. Phys. 105, 9104 (1996).
- N. Rom, J. W. Pang and D. Neuhauser, Scattering matrix elements
by a time-independent wave packet complex scaling formalism, J.
Chem. Phys. 105, 10436 (1996).
- G. J. Kroes, M. R. Wall, J. W. Pang and D. Neuhauser, Avoiding
long propagation times in wave packet calculations on scattering with
resonances: A new algorithm involving filter diagonalization. J.
Chem. Phys. 106, 1800 (1997).
- N. Rom. D. M. Charutz and D. Neuhauser, Shifted-Contour
Auxiliary-Field Monte-Carlo: Circumventing the Sign Difficulty for
Electronic Structure Calculations. Chem. Phys. Lett.
270, 382 (1997).
- J. W. Pang, D. Neuhauser and N. Moiseyev, Photoabsorption
Probability for a System Governed by a Time-Dependent Hamiltonian
through the (t,t') formalism. J. Chem. Phys. 106, 6839
(1997).
- D. Neuhauser, R. S. Judson, M. Baer and D. J. Kouri,
State-to-state time-dependent wavepacket approach to reactive
scattering: State-resolved cross-sections for D+H2(v=1,
j=1,m)->H+DH(v',j'), J. Chem. Soc. Faraday Trans. 93, 727
(1997).
- Vorobeichick, U. D. Neuhauser, M. Orenstein and N. Moiseyev, The
effect of the second derivative paraxial term in the scalar Maxwell’s
equation on amplitude loss in optical fibers, Journal of the Opt.
Soc. Am. B. 14, 1207 (1997).
- I. Vorobechik, D. Neuhauser and N. Moiseyev, Calculation of light
distribution in optical devices by a global solution of the
inhomogeneous scalar wave equation, IEEE J. Quant. Electron. 33,
1236 (1997).
- E. Narevicius, D. Neuhauser, J. Korsch and N. Moiseyev,
Resonances from the amplitudes of short time-dependent complex-scaled
cross-correlation functions by the Filter-Diagonal Method, Chem.
Phys. Lett. 276, 250 (1997).
- G-J Kroes, M. C. van Hemert, G.D. Billing and D. Neuhauser,
Photodissociation of CH2 through the
coupled 2A and 3A: quantitative branching ratios for the production of
CH + H and C + H2, Chem. Phys.
Lett.. 271, 371 (1997).
- G. J. Kroes, M. C. vanHemert, G.D. Billing and D. Neuhauser,
Photodissociation of CH2 .6. Three-dimensional quantum dynamics of
the dissociation through the coupled 2A'' and 3A'' states. J. Chem.
Phys. 107, 5757 (1997).
- D. Neuhauser, Filter Diagonalization: A general approach for
calculating High-Energy Eigenstates and Eigenfunctions and for
Extracting Frequencies from a General Signal, (
PDF, postscript)
in E. Stechel and G. C. Schatz (eds.), High-Energy Vibrational
Spectroscopy, ACS (1997). (Conference Proceeding)
- A. Y. Rom, D. Neuhauser and R. B. Gerber, Quantum mechanical
calculation of inelastic scattering of an atom by a large anharmonic
cluster: Application to He+Ar13. J. Chem. Phys. 108, 6084
(1998).
- A. J. R. daSilva, J. W. Pang, E. A. Carter and D. Neuhauser,
Anharmonic vibrations via filter diagonalization of ab initio
dynamics trajectories. J. Phys. Chem. 102, 881
(1998).
- John W. Pang, Thorsten Dieckmann, Juli Feigon and Daniel Neuhauser,
Extraction of spectral information from a short-time signal
using filter-diagonalization: Recent developments and applications to
semiclassical reaction dynamics and nuclear magnetic resonance signals,
(
PDF) J. Chem. Phys. 108, 8360 (1998).
- Ashish K. Gupta and Daniel Neuhauser, Control of Harmonic
Generation by Initial-State Preparation, Chem. Phys. Lett..
Chem. Phys. Lett. 290, 543 (1998).
- S. M. Anderson, J. I. Zink and D. Neuhauser, A Simple and
Accurate Approximation for a Coupled System-Bath: Locally Propagating
Gaussians, (
PDF, postscript)
Chem. Phys. Lett.291, 387 (1998).
- M. R. Wall, T. Dieckmann, J. Feigon and D. Neuhauser,
Two-Dimensional Filter-Diagonalization: Spectral Inversion of 2D
NMR Time-Correlation Signals Including Degeneracies, Chem.
Phys. Lett. 291, 465 (1998).
- N. Rom, E. Fattal, A. K. Gupta, E. A. Carter and D. Neuhauser,
Shifted-Contour Auxiliary-Field Monte Carlo for electronic
structure: Molecular applications, (
PDF) J. Chem. Phys. 109, 8241 (1998).
- R. Baer, M. Head-Gordon and D. Neuhauser, Shifted-contour
auxiliary field Monte Carlo for ab initio electronic structure:
Straddling the sign problem, (
PDF, postscript)
J. Chem. Phys. 109, 6219 (1998).
- S. M. Anderson, T. J. Park and D. Neuhauser, Local
Propagating Gaussians: Flexible vs. Frozen Widths, (
postscript, PDF,
abstract)
Phys. Chem. Chem. Phys. 1, 1343 (1999).
- W. Kim, D. Neuhauser, M. R. Wall, and P. M. Felker,
Six-Dimensional Calculations of Intermolecular States in
Molecule-Large Molecule Complexes by Filter Diagonalization:
Benzene—H2O, J. Chem. Phys. 110, 8461
(1999).
- D. Neuhauser, Quantum Dynamics and Spectroscopy in
Encyclopedia of Physical Chemistry and Chemical Physics (to be published
by the Institute of Physics).
- R. Baer and D. Neuhauser, Molecular electronic structure using
auxiliary field Monte Carlo, plane waves and pseudopotentials, J.
Chem. Phys., 112, 1679 (2000).
- S. M. Anderson, J. Ka, P. M. Felker and D. Neuhauser,
Semiclassical vs. Exact Eigenvalues of He-Benzene using
cross-correlation Filter-Diagonalization, Chem. Phys. Lett.,
328, 516 (2000).
- D. Neuhauser,
T.-J. Park, and J. I. Zink, Analytical Derivation
of Interference Dips in Molecular Absorption Spectra: Molecular
Properties and Relationships to
Fano's Antiresonance, Phys. Rev.
Lett. 185, 5304, (2000).
- P. M. Felker, D. Neuhauser and W. Kim,
Efficient calculation of
molecular constants and transition
intensities in weakly bound species
from J=0 eigenstates: Benzene-Ar as test case, J. Chem. Phys.,
114, 1233 (2001).
- A. K. Gupta and D. Neuhauser,
Multiharmonic Emission from a Dense
Sample of Molecules, Int. J. Q. Chem, 81, 260
(2001).
- R. Baer and D. Neuhauser, Phase Coherent Electronics: A
molecular switch based on quantum interference, JACS,
124, 4200 (2002)
(PDF).
- R. Baer and D. Neuhauser, Anti-coherence based molecular
electronics: XOR-gate response,
Chem. Phys. 281, 353 (2002).
(PDF)
- R. Baer and D. Neuhauser,
Ab-initio electrical conductivity of a molecular wire,
Int. J. Q. Chem., 91, 524 (2002).
(PDF)
- G. Bussiere, C. Reber, D. Neuhauser,
D. A. Walter and J. I. Zink,
Molecular properties
obtained by analysis of electronic spectra containing
interference dips. Comparisons of analytical
equations and exact theory,
J. Phys. Chem. A 107 1258-1267 (2003).
- R. Baer and D. Neuhauser, Many-body scattering formalism
of quantum molecular conductance,
Chem. Phys. Lett.
374,
459 (2003).
(PDF)
- S. M. Anderson, D. Neuhauser and R. Baer,
Trajectory Dependent Cellularized Frozen Gaussians (TDCFG),
a new approach for semi-classical dynamics:
theory and application to He-Naphtalene eigenvalues,
J. Chem. Phys. 118 , 9103-9108 (2003).
(PDF)
- C. Liu, D. Walter, D. Neuhauser and R. Baer,
Molecular Recognition and Conductance in Crown Ethers,
JACS 125, 13936-13937 (2003).
(PDF)
-
A. Luchow,
D. Neuhauser, J. Ka, R. Baer, J. Chen and V. A. Mandelshtam,
Computing energy levels by inversion of
imaginary-time cross-correlation functions,
J. Phys. Chem.
A 107, 7175 (2003).
(PDF)
-
D. Neuhauser, R. Baer and R. Kosloff,
Quantum soliton dynamics in vibrational chains: Comparison of
fully correlated, mean field, and classical dynamics,
J. Chem. Phys.
118, 5729 (2003).
(PDF)
-
R. Collepardo-Guevara, D. Walter ,D. Neuhauser and R. Baer,
A Huckel study of the effect of a
molecular resonance cavity on the
quantum conductance of an alkene wire,
submitted for publication (2003).
(PDF)
- R.Baer, D. Neuhauser, P.R. Zdanska
and N. Moiseyev,
Ionization and high-harmonic
generation in aligned benzene
by intense circularly polarized light,
Phys Rev A 68, 043406 (2003).
(PDF)
- D. Neuhauser and R. Baer,
A Two-Grid Formalism for the Maxwell Equation,
J. Theo. and Comp. Chem. 2, 537-546 (2003).
(PDF)
- P. M. Felker and D. Neuhauser,
Intermolecular Hamiltonian for solute--solvent_n
clusters and application to the (1|1) isomer of anthracene--He_2
J. Chem. Phys. 119 , 5558 (2003).
- R. Baer, S. Weiss and D. Neuhauser,
Enhanced absorption induced by a metallic nano-shell,
Nano Letters 4, 85-88 (2004).
(PDF)
- R. Baer, T. Seideman, S. Ilani and D. Neuhauser,
Ab-initio study of the AC impedance of a molecular junction,
J. Chem. Phys. 120, 3387-3396 (2004).
(PDF)
- R. Baer and D. Neuhauser,
Real-time linear response for
time-dependent density-functional theory,
submitted for publication,
- D. Walter, D. Neuhauser and R. Baer,
Quantum Intereference in Polycyclic Aromatic Hydrocarbon Based
Molecular Wires,
submitted for publication.
(PDF)
Department of
Chemistry & Biochemistry UCLA Box 951569 (post) 607 Charles
E. Young Drive East (courier) Los Angeles, CA 90095-1569
Back: Derek Walter, Pep Charusanti, Daniel Neuhauser, Jaejin Ka,
Rovshan Sadygov
Front: Sybil Anderson, Jay Small Wood, Ashish Gupta
The Neuhauser Group
Postdocs
Dr. Jaejin Ka
Dr. Rovshan
Sadygov
Graduate Students
Sybil Anderson
Pep Charusanti
Ashish K. Gupta
C. Jay Smallwood
Derek Walter
Jian F. Zhu
Former Neuhauser Group Members
Dr. Johnny W. Pang
Dr. Tae-Jun Park
Dr. Naomi Rom
Dr. Michael R. Wall
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