Quenching of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Vibrations in Ultracold<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>He</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inlin

Balakrishnan, N.; Forrey, Robert C.; Dalgarno, A.

doi:10.1103/physrevlett.80.3224

Cited by 169 publications

(142 citation statements)

References 25 publications

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“…We found that each curve can support only one bound state, the energies are at −68.2 mK for the former, and at −10.35 mK for the latter. These results are to be compared with the results of −42.9 and −2.3 mK reported by Balakrishnan et al [33], respectively. While the numerical values depend on the potentials adopted and the method used in the calculation, the conclusion for the existence of one bound state for each system is clearly established.…”

Section: The He-h-h Systemmentioning

confidence: 87%

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules

Lin

1999

J. Phys. B: At. Mol. Opt. Phys.

124

169

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Abstract. We searched for the existence of weakly bound He-He-H, He-He-H − and He-H-H molecules where the binding energies are expected to be of the order of degrees Kelvin. By employing the best empirical interaction between each pair of particles, we solved the Schrödinger equation for the triatomic systems using hyperspherical coordinates in the adiabatic approximation. We found no bound states for 4 He-4 He-1 H, three bound states for 4 He-4 He-1 H − and one bound state for 4 He-1 H-1 H. Bound states for other isotope combinations are also examined.

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Section: The He-h-h Systemmentioning

confidence: 87%

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules

Lin

1999

J. Phys. B: At. Mol. Opt. Phys.

124

169

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“…The kinetic parameters k ↓ and k ↑ represent an individual coupling of the two-level-system to the bath. Considering coefficients derived from gas phase collisions they settle to a constant asymptotic value as the temperature is lowered [29]. The reason is that the slow approach velocity is compensated by the increase in the thermal De-Broglie wavelength.…”

Section: Discussionmentioning

confidence: 99%

Performance of discrete heat engines and heat pumps in finite time

2000

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The performance in finite time of a discrete heat engine with internal friction is analyzed. The working fluid of the engine is composed of an ensemble of noninteracting two level systems. External work is applied by changing the external field and thus the internal energy levels. The friction induces a minimal cycle time. The power output of the engine is optimized with respect to time allocation between the contact time with the hot and cold baths as well as the adiabats. The engine's performance is also optimized with respect to the external fields. By reversing the cycle of operation a heat pump is constructed. The performance of the engine as a heat pump is also optimized. By varying the time allocation between the adiabats and the contact time with the reservoir a universal behavior can be identified. The optimal performance of the engine when the cold bath is approaching absolute zero is studied. It is found that the optimal cooling rate converges linearly to zero when the temperature approaches absolute zero.

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“…This new area of focus, ultracold molecular scattering, has already displayed interesting quantum effects [24]. Further, understanding this area is also crucial in realizing molecular Bose-Einstein condensation [25,26].…”

Section: B Ultracold Molecular Collisions: Extreme Quantum Effectsmentioning

confidence: 99%

Entanglement-assisted coherent control in nonreactive diatom–diatom scattering

Gong

Shapiro

Brumer

2003

The Journal of Chemical Physics

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Intriguing quantum effects that result from entangled molecular rovibrational states are shown to provide a novel means for controlling both differential and total collision cross sections in identical particle diatom-diatom scattering. Computational results on elastic and inelastic scattering of para-H2 and para-H2 are presented, with the collision energy ranging from 400 cm −1 to the ultracold regime. The experimental realization and possible extension to other systems are discussed.

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Quenching ofH2Vibrations in Ultracold3Heand
N. Balakrishnan
¹
,
Robert C. Forrey
²
,
A. Dalgarno
³

Cited by 169 publications

References 25 publications

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules

Performance of discrete heat engines and heat pumps in finite time

Entanglement-assisted coherent control in nonreactive diatom–diatom scattering

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Quenching ofH2Vibrations in Ultracold3HeandN. Balakrishnan1, Robert C. Forrey2, A. Dalgarno3

Cited by 169 publications

References 25 publications

Calculations of the binding energies of weakly bound He-He-H, He-He-H-and He-H-H molecules

Calculations of the binding energies of weakly bound He-He-H, He-He-H-and He-H-H molecules

Performance of discrete heat engines and heat pumps in finite time

Entanglement-assisted coherent control in nonreactive diatom–diatom scattering

Contact Info

Product

Resources

About

Quenching ofH2Vibrations in Ultracold3Heand
N. Balakrishnan
¹
,
Robert C. Forrey
²
,
A. Dalgarno
³

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules

Calculations of the binding energies of weakly bound He-He-H, He-He-H^-and He-H-H molecules