Observation of mesoscopic crystalline structures in a two
... profile (Fig. 5), which results from the blockade effect and from the rotational symmetry of the system. Crystalline structures become visible once each microscopic configuration has been centred and aligned to a fixed reference axis (Fig. 2b and Methods). For our smallest sample (R ≈ 3.5 µm), we ob ...
... profile (Fig. 5), which results from the blockade effect and from the rotational symmetry of the system. Crystalline structures become visible once each microscopic configuration has been centred and aligned to a fixed reference axis (Fig. 2b and Methods). For our smallest sample (R ≈ 3.5 µm), we ob ...
Full text
... two fundamental weaknesses. (1) The Pauli exclusion principle is not adequately taken into account, since no spin wave functions are introduced. Therefore, spin is not allowed to exert any influence on the energy levels. An obvious consequence is the fact that excited states, where two electrons are ...
... two fundamental weaknesses. (1) The Pauli exclusion principle is not adequately taken into account, since no spin wave functions are introduced. Therefore, spin is not allowed to exert any influence on the energy levels. An obvious consequence is the fact that excited states, where two electrons are ...
chemistry -- questions -
... __ 70. The characteristic way in which atoms of an element react is most related to the a) number of electrons in the outermost shell. b) number of electrons in the innermost shell. c) number of neutrons in the nucleus. d) size of the nucleus. __ 71. Which of the following statements is NOT true abo ...
... __ 70. The characteristic way in which atoms of an element react is most related to the a) number of electrons in the outermost shell. b) number of electrons in the innermost shell. c) number of neutrons in the nucleus. d) size of the nucleus. __ 71. Which of the following statements is NOT true abo ...
Quantum rings for beginners: energy spectra and persistent currents
... Other many-particle methods have also been applied for studying the electronic structure of quantum rings. The discrete rings can be solved by using the Bethe ansatz [10,11], which becomes powerful especially in the case of an in;nitely strong contact interaction (the so-called t-model). In the case ...
... Other many-particle methods have also been applied for studying the electronic structure of quantum rings. The discrete rings can be solved by using the Bethe ansatz [10,11], which becomes powerful especially in the case of an in;nitely strong contact interaction (the so-called t-model). In the case ...
Paper
... the total q line shift remains 4n 0 U/7h, while the rms-width ∆ν = ∆νn2 + ∆ν2p is the quadrature sum of the mean-field and the Doppler widths [11]. In our experiment a weak laser beam, with a frequency of 1.7 GHz red-detuned from the sodium 3S1/2 F = 1 → 3P3/2 F = 0, 1, 2 transition, was split into ...
... the total q line shift remains 4n 0 U/7h, while the rms-width ∆ν = ∆νn2 + ∆ν2p is the quadrature sum of the mean-field and the Doppler widths [11]. In our experiment a weak laser beam, with a frequency of 1.7 GHz red-detuned from the sodium 3S1/2 F = 1 → 3P3/2 F = 0, 1, 2 transition, was split into ...
Quantum simulations of a freely rotating ring of ultracold and... Robicheaux and K. Niffenegger
... this method is based on a suggestion made to us by Li [19] to use the ponderomotive shift from a standing light wave. Reference [9] discussed a different method based on a strong electric field. Reference [3] proposed preparing the ring of identical bosonic ions into an eigenstate with energy given ...
... this method is based on a suggestion made to us by Li [19] to use the ponderomotive shift from a standing light wave. Reference [9] discussed a different method based on a strong electric field. Reference [3] proposed preparing the ring of identical bosonic ions into an eigenstate with energy given ...
On the Convergence of Atomic Charges with the Size of the
... Atomic charges are an important tool to study electronic structure and chemical reactivity in, for example, protein reaction mechanisms. The following examples illustrate their importance: molecular force fields use charges to model electrostatic interactions1; the equilibrium constant of acid disso ...
... Atomic charges are an important tool to study electronic structure and chemical reactivity in, for example, protein reaction mechanisms. The following examples illustrate their importance: molecular force fields use charges to model electrostatic interactions1; the equilibrium constant of acid disso ...
Do You Need to Believe in Orbitals to Use Them - Philsci
... express the atomic wave-function as a product of orbitals. This procedure is quite successful, but it still leaves us with chemically significant margins of error. To correct this error, we must, as described above, move beyond the orbital concept altogether to an atomic wave-function that, because ...
... express the atomic wave-function as a product of orbitals. This procedure is quite successful, but it still leaves us with chemically significant margins of error. To correct this error, we must, as described above, move beyond the orbital concept altogether to an atomic wave-function that, because ...
Ground- and Excited-State Properties of DNA Base Molecules from
... (DNA) and its base molecules range from empirical molecular dynamics to ab initio quantum chemistry (see, e.g., refs. 1–3). The latter methods can be very accurate. Due to their unfavorable scaling properties, however, wave function-based methods such as Hartree–Fock or Møller–Plesset are restricted ...
... (DNA) and its base molecules range from empirical molecular dynamics to ab initio quantum chemistry (see, e.g., refs. 1–3). The latter methods can be very accurate. Due to their unfavorable scaling properties, however, wave function-based methods such as Hartree–Fock or Møller–Plesset are restricted ...
CHEM 322 - Queen`s Chemistry
... Method: The course will be taught by Peter Loock, who has research interests in experimental research on electronically excited states. Each spectroscopic technique will be first introduced using fundamental QM principles, and then expanded by introducing practical applications. Evaluation: The cour ...
... Method: The course will be taught by Peter Loock, who has research interests in experimental research on electronically excited states. Each spectroscopic technique will be first introduced using fundamental QM principles, and then expanded by introducing practical applications. Evaluation: The cour ...
Ionization
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes. Ionization can result from the loss of an electron after collisions with sub atomic particles, collisions with other atoms, molecules and ions, or through the interaction with light. Heterolytic bond cleavage and heterolytic substitution reactions can result in the formation of ion pairs. Ionization can occur through radioactive decay by the internal conversion process, in which an excited nucleus transfers its energy to one of the inner-shell electrons causing it to be ejected.