| Issue Date | Title | Author(s) | Type | Access |
| 6-Jan-2015 | New boson realization of the Lipkin model obeying the su(2)-algebra | Tsue, Yasuhiko ; Providência, Constança ; Providencia, João da ; Yamamura, Masatoshi | article | openAccess |
| 2017 | A note on the Lipkin model in arbitrary fermion number | Tsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi | article | openAccess |
| 1990 | A note on thermal bosons | Providência, João da ; Fiolhais, Carlos | article | openAccess |
| 2006 | The numerical range of 2-dimensional Krein spaces operators | Nakazato, Hiroshi ; Bebiano, Natália ; Providência, João da | preprint | openAccess |
| 2004 | Numerical ranges of unbounded operators arising in quantum physics | Bebiano, N. ; Lemos, R. ; Providência, J. da | article | openAccess |
| 2003 | On generalized numerical ranges of operators on an indefinite inner product space | Bebiano, N. ; Lemos, R. ; Providência, J. da ; Soares, G. | preprint | openAccess |
| 2007 | On the corners of certain determinantal ranges | Kovačec, Alexander ; Bebiano, Natália ; Providência, João da | article | openAccess |
| 2009 | On the Courant-Fischer theory for Krein spaces | Bebiano, N. ; Nakazato, H. ; Providência, J. da | article | openAccess |
| 2005 | On the geometry of numerical ranges in spaces with an indefinite inner product | Bebiano, N. ; Lemos, R. ; Providência, J. da ; Soares, G. | article | openAccess |
| 1990 | On the random phase approximation based on the thermo field dynamics formalism | Yamamura, Masatoshi ; Providência, João da ; Kuriyama, Atsushi ; Fiolhais, Carlos | article | openAccess |
| 2016 | A possible framework of the Lipkin model obeying the SU(n) algebra in arbitrary fermion number. I: The SU(2) algebras extended from the conventional fermion pair and determination of the minimum weight states | Tsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi | article | openAccess |
| 2016 | A possible framework of the Lipkin model obeying the SU(n) algebra in arbitrary fermion number. II: Two subalgebras in the SU(n) Lipkin model and an approach to the construction of a linearly independent basis | Tsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi | article | openAccess |
| 2017 | A practical scheme for constructing the minimum-weight states of the su(n)-Lipkin model in arbitrary fermion number | Tsue, Yasuhiko ; Providência, Constança ; Providência, João da ; Yamamura, Masatoshi | article | openAccess |
| 2008 | Product of diagonal entries of the unitary orbit of a 3-by-3 normal matrix | Nakazato, Hiroshi ; Bebiano, Natália ; Providência, João da | article | openAccess |
| 1-Nov-2016 | Products of Laurent operators and fields of values | Bebiano, Natália ; Providência, João da | article | embargoedAccess |
| 14-Jun-2013 | A Pseudo su(1,1)-Algebraic Deformation of the Cooper-Pair in the su(2)-Algebraic Many-Fermion Model | Tsue, Yasuhiko ; Providência, Constança ; Providencia, João da ; Yamamura, Masatoshi | article | openAccess |
| 6-Jul-2012 | Quark-Hadron Phase-Transition in an Extended NJL Model with Scalar-Vector Interaction | Lee, Tong-Gyu; Tsue, Yasuhiko ; Providencia, João da ; Providência, Constança ; Yamamura, Masatoshi | article | openAccess |
| 2014 | Revisiting the inverse field of values problema | Bebiano, Natália ; Providência, João da ; Nata, Ana ; Providência, J. P. da. | article | embargoedAccess |
| 22-Jan-2009 | Self-Consistent-Field Method and $τ$-Functional Method on Group Manifold in Soliton Theory: a Review and New Results | Nishiyama, Seiya; Providencia, João da ; Providência, Constança ; Cordeiro, Flávio ; Komatsu, Takao | article | openAccess |
| 1-Mar-2017 | Spin polarization and color superconductivity in the Nambu–Jona-Lasinio model at finite temperature | Matsuoka, H. ; Tsue, Y. ; Providência, J. ; Providência, C. ; Yamamura, M. | article | openAccess |
