Zobrazeno 1 - 10 of 45 pro vyhledávání: '"J. M. P. Carmelo"'
1
Akademický článek
Zigzag materials: Selective interchain couplings control the coexistence of one-dimensional physics and deviations from it
Autor: J. M. P. Carmelo, P. D. Sacramento, T. Stauber, D. K. Campbell
Publikováno v: Physical Review Research, Vol 5, Iss 4, p 043058 (2023)
The coexistence in the low-temperature spin-conducting phases of the zigzag materials BaCo_{2}V_{2}O_{8} and SrCo_{2}V_{2}O_{8} of one-dimensional (1D) physics with important deviations from it is not well understood. The studies of this paper accoun
Externí odkaz: https://doaj.org/article/238912ded7694b22bec353f0a60bca21
Zobrazit plný text záznamu
2
One-particle spectral function singularities in a one-dimensional gas of spin-1/2 fermions with repulsive delta-function interaction
Autor: Tilen Čadež, J. M. P. Carmelo, S. Nemati
Publikováno v: Nuclear Physics B, Vol 942, Iss, Pp 45-102 (2019)
Nuclear Physics
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The momentum, fermionic density, spin density, and interaction dependencies of the exponents that control the (momentum-energy)-plane singular features of the one-fermion spectral functions of a one-dimensional gas of spin-1/2 fermions with repulsive
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09dae0578465f7b9d75705e5998e86a4
http://www.sciencedirect.com/science/article/pii/S0550321319300756
Zobrazit plný text záznamu
3
One-particle spectral functions of the one-dimensional Fermionic Hubbard model with one fermion per site at zero and finite magnetic fields
Autor: J. M. P. Carmelo, Tilen Čadež, Pedro D. Sacramento
Here the line shape of the up- and down-spin one-particle spectral functions at and in the (k,energy)-plane's vicinity of their cusp singularities is studied for the Mott-Hubbard insulator described by the 1D Hubbard model with one fermion per site a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3f78d3ecd1b961db47f914a2a887f53
http://arxiv.org/abs/2105.06721
Zobrazit plný text záznamu
4
Bethe strings in the dynamical structure factor of the spin-1/2 Heisenberg XXX chain
Autor: Tilen Čadež, Pedro D. Sacramento, J. M. P. Carmelo
Publikováno v: Nuclear Physics
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Nuclear Physics B, Vol 960, Iss, Pp 115175-(2020)
Recently there has been a renewed interest in the spectra and role in dynamical properties of excited states of the spin-1/2 Heisenberg antiferromagnetic chain in longitudinal magnetic fields associated with Bethe strings. The latter are bound states
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::428e640b28254861855d59cfee829f36
https://doi.org/10.1016/j.nuclphysb.2020.115175
Zobrazit plný text záznamu
6
One-electron singular spectral features of the 1D Hubbard model at finite magnetic field
Autor: J. M. P. Carmelo, Tilen Čadež
Publikováno v: Nuclear Physics B, Vol 914, Iss C, Pp 461-552 (2017)
Nuclear Physics B
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The momentum, electronic density, spin density, and interaction dependences of the exponents that con-trol the (k, ω)-plane singular features of the σ=↑, ↓one-electron spectral functions of the 1D Hubbard model at finite magnetic field are stud
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8525bf48b42fdb4ce00772667cbbef70
http://arxiv.org/abs/1605.09620
Zobrazit plný text záznamu
7
General spectral function expressions of a 1D correlated model
Autor: Karlo Penc, J. M. P. Carmelo
Publikováno v: The European Physical Journal B. 51:477-499
We introduce a method that allows the evaluation of general expressions for the spectral functions of the one-dimensional Hubbard model for all values of the on-site electronic repulsion U. The spectral weights are expressed in terms of pseudofermion
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cfb8959e7866f24d0ff7ffc06f18774
https://doi.org/10.1140/epjb/e2006-00235-5
Zobrazit plný text záznamu
8
The Hubbard model description of the TCNQ related singular features in photoemission of TTF-TCNQ
Autor: J. M. P. Carmelo, Ralph Claessen, Pedro D. Sacramento, Karlo Penc, Michael Sing
Publikováno v: Journal of Physics: Condensed Matter. 18:5191-5212
In this paper we use the pseudofermion dynamical theory (PDT) to study the singular spectral features due to one-electron removal within the one-dimensional Hubbard model. The PDT reveals that in the whole (k, ω)-plane such features are of the power
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::487a1349abc5f07046a804790762462c
https://doi.org/10.1088/0953-8984/18/22/019
Zobrazit plný text záznamu
9
The low-energy limiting behavior of the pseudofermion dynamical theory
Autor: L. M. Martelo, Karlo Penc, J. M. P. Carmelo
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this paper we show that the general finite-energy spectral-function expressions provided by the pseudofermion dynamical theory for the one-dimensional Hubbard model lead to the expected low-energy Tomonaga–Luttinger liquid correlation function e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a5b99579fad7c7052235d604fd8bf23
https://doi.org/10.1016/j.nuclphysb.2005.12.016
Zobrazit plný text záznamu
10
Scattering mechanisms and spectral properties of the one-dimensional Hubbard model
Autor: J. M. P. Carmelo
Publikováno v: Journal of Physics: Condensed Matter. 17:5517-5522
It is found that the finite-energy spectral properties of the one-dimensional Hubbard model are controlled by the scattering of charged $\eta$-spin-zero $2\nu$-holon composite objects, spin-zero $2\nu$-spinon composite objects, and charged $\eta$-spi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02bd4a79b700e5066bd8c1a215d89d4a
https://doi.org/10.1088/0953-8984/17/36/007
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje