By Susana Hernandez, Horacio Cataldo

This convention sequence is now firmly tested as one of many greatest sequence of foreign conferences within the box of many-body physics. the present quantity keeps the culture of overlaying the whole spectrum of theoretical instruments built to take on very important and present quantum many-body difficulties. It goals to foster the alternate of rules and strategies between physicists operating in various subfields of physics, akin to nuclear and sub-nuclear physics, astrophysics, atomic and molecular physics, quantum chemistry, complicated structures, quantum box thought, strongly correlated digital platforms, magnetism, quantum fluids and condensed topic physics. The highlights of this ebook contain cutting-edge contributions to the certainty of supersolid helium, BEC-BCS crossover, fermionic BEC, quantum section transitions, computing, simulations, in addition to the newest effects at the extra conventional subject matters of liquid helium, droplets, nuclear and digital structures. This quantity demonstrates the power and the elemental value of many-body theories, innovations, and functions in figuring out diversified and novel phenomena on the state of the art of physics. It includes many of the invited talks plus a variety of good poster displays.

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Extra info for Recent Progress in Many-Body Theories: Proceedings of the 13th International Conference Buenos Aires, Argentina

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The low-lying energy spectra are investigated numerically, and explicit solutions are shown for SU(2), SU(3), SU(4), and SU(5). , without fermions) of the U(l) and SU(2) cases in one and two spatial dimensions. 1,2 We conclude with a brief discussion on how the new maximal-tree formulation might profitably be used to make further progress for the non-Abelian S\J(N) gauge theories with N > 2 in three spatial dimensions where, as we show, significant new complications arise. 2. Hamiltonian Lattice Gauge Theory The original Abelian gauge theory of electromagnetism was extended by Yang and Mills3 using gauge fields of more complicated structure, which included internal degrees of freedom.

From the form of the Hamiltonian in Eq. (19) or Eq. (27), we see that it is convenient to define a scaled energy e as follows, r, 9 2a N g'a which we use for representing the numerical results. (28) 33 For SU(2), the one-plaquette Schrodinger equation reduces to the Mathieu equation and the spectrum is given by its odd characteristic values, as shown in the left panel of Fig. 2. No such closed-form analytical solutions seem to exist for SU(iV) with N > 2 , and we resort to the numerical procedure described above to obtain the remaining results shown in Fig.

This of course never has been observed. Even if one doubts the validity of the estimates about Hyperion the problem remains that "almost all" closed macroscopic systems (all those with chaos prone Hamiltonians) necessarily must show macroscopic quantum effects some way or another - contrary to experience. Then we are in trouble if we insist on describing everything as closed quantum system. Finally we know that we can get complete information about the macroscopic past of a macroscopic object by just solving the equations of motion backwards in time.

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