Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Mello, Pier A."'
Publikováno v:
Waves in Random and Complex Media 2023
We consider the problem of electron transport along a one-dimensional disordered multiple-scattering conductor, and study the electron density for all the electronic levels. A model is proposed for the reduced density matrix of the system placed betw
Externí odkaz:
http://arxiv.org/abs/2302.10304
We study the quantum-mechanical uncertainty relation originating from the successive measurement of two observables $\hat{A}$ and $\hat{B}$, with eigenvalues $a_n$ and $b_m$, respectively, performed on the same system. We use an extension of the von
Externí odkaz:
http://arxiv.org/abs/2006.00347
Autor:
Mello, Pier A., Yépez, Miztli
Publikováno v:
Phys. Rev. B 101, 014206 (2020)
We consider the problem of electron transport across a quasi-one-dimensional disordered multiply-scattering medium, and study the statistical properties of the electron density inside the system. In the physical setup that we contemplate, electrons o
Externí odkaz:
http://arxiv.org/abs/1907.13249
Autor:
Band, Yehuda B., Mello, Pier A.
We show that partial transposition for pure and mixed two-particle states in a discrete $N$-dimensional Hilbert space is equivalent to a change in sign of a "momentum-like" variable of one of the particles in the Wigner function for the state. This g
Externí odkaz:
http://arxiv.org/abs/1705.09613
Publikováno v:
Phys. Rev. B 96, 180203 (2017)
The single-parameter scaling hypothesis relating the average and variance of the logarithm of the conductance is a pillar of the theory of electronic transport. We use a maximum-entropy ansatz to explore the logarithm of the energy density, $\ln {\ca
Externí odkaz:
http://arxiv.org/abs/1611.07598
Autor:
Band, Y. B., Mello, Pier A.
We first show that partial transposition for pure and mixed two-particle states in a discrete $N$-dimensional Hilbert space is equivalent to a change in sign of the momentum of one of the particles in the Wigner function for the state. We then show t
Externí odkaz:
http://arxiv.org/abs/1601.04481
We study the Weyl-Wigner transform in the case of discrete variables defined in a Hilbert space of finite prime-number dimensionality $N$. We define a family of Weyl-Wigner transforms as function of a phase parameter. We show that it is only for a sp
Externí odkaz:
http://arxiv.org/abs/1507.03167
Publikováno v:
Physical Review B 91, 184203 (2015)
We study the problem of wave transport in a one-dimensional disordered system, where the scatterers of the chain are $n$ barriers and wells with statistically independent intensities and with a spatial extension $\l_c$ which may contain an arbitrary
Externí odkaz:
http://arxiv.org/abs/1411.6734
Measurements on classical systems are usually idealized and assumed to have infinite precision. In practice, however, any measurement has a finite resolution. We investigate the theory of non-ideal measurements in classical mechanics using a measurem
Externí odkaz:
http://arxiv.org/abs/1405.6439