IST-ID Research
David EMMANUEL-COSTA


Postal Address:

Centro de Física Teórica de Partículas
Departamento de Física
Instituto Superior Técnico
Avenida Rovisco Pais, 1
1049-001 Lisboa
Portugal

Tel:  (+351) 21 841 9112 (Edifício de Física, Room 5-1.15)
Fax:  (+351) 21 841 9143
Mail: david 'at' cftp.ist.utl.pt

Research interests:

Grand Unified Field Theory and Proton Decay
Fermion Masses (quarks and neutrinos) and CP Violation
Baryon Asymmetry of the Universe
Extra Dimensions and Orbifolds GUT's
Noncommutative Quantum Field Theories

Publications

  1. Nearest-Neighbour-Interactions from a minimal discrete flavour symmetry within SU(5) Grand Unification,
    D. Emmanuel-Costa and C. Simões,
    arXiv:1001.5065 [hep-ph].

  2. Nearest-Neighbour Interaction from an Abelian Symmetry and Deviations from Hermiticity,
    G. C. Branco, D. Emmanuel-Costa and C. Simões,
    Phys. Lett. B690 (2010) 62; arXiv:1001.5065 [hep-ph].

  3. Reconstruction of quark mass matrices with weak basis texture zeroes from experimental input,
    D. Emmanuel-Costa and C. Simões,
    Phys. Rev. D 79 (2009) 073006. e-Print: arXiv:0903.0564 [hep-ph].

  4. Anomaly-free constraints in neutrino seesaw models,
    D. Emmanuel-Costa, Edison T. Franco, and R. González Felipe,
    Phys. Rev. D 79 (2009) 115001. e-Print: arXiv:0902.1722 [hep-ph].

  5. Weak Basis Transformations and Texture Zeros in the Leptonic Sector,
    G.C. Branco, D. Emmanuel-Costa, R. Gonzalez Felipe, H. Serodio,
    Phys. Lett. B670 (2009) 340. e-Print: arXiv:0711.1613 [hep-ph].

  6. Four Zero Neutrino Yukawa Textures in the Minimal Seesaw Framework,
    Gustavo C. Branco, David Emmanuel-Costa, M.N. Rebelo, Probir Roy,
    Phys. Rev. D 77 (2008) 053011. e-Print: arXiv:0712.0774 [hep-ph].

  7. CP Violation and Neutrino Masses and Mixings from Quark Mass Hierarchies,
    Wilfried Buchmuller, Laura Covi, David Emmanuel-Costa, Soren Wiesenfeldt,
    JHEP 0712 (2007) 030. e-Print: arXiv:0709.4650 [hep-ph].

  8. Natural Gauge and Gravitational Coupling Unification and the Superpartner Masses,
    D. Emmanuel-Costa, P. Fileviez Pérez, R. González Felipe,
    Phys. Lett. B648 (2007) 60. Hep-ph/0610178.

  9. Spontaneous CP Violation in a SUSY Model with a complex CKM,
    G.C. Branco, D. Emmanuel-Costa, J.C. Romão,
    Phys. Lett. B639 (2006) 661. hep-ph/0604110.

  10. Minimal String-Scale Unification of Gauge Couplings,
    D. Emmanuel-Costa, R. González Felipe,
    Phys. Lett. B623 (2005) 111. Hep-ph/0505257.

  11. Flavour Structure and Proton Decay In 6D Orbifold GUTs,
    W. Buchmuller, L. Covi, D. Emmanuel-Costa, S. Wiesenfeldt,
    JHEP 0409 (2004) 004. Hep-ph/0407070.

  12. Proton decay in a consistent supersymmetric SU(5) GUT model,
    D. Emmanuel-Costa, S. Wiesenfeldt
    Nucl. Phys. B661 (2003) 62. Hep-ph/0302272.

  13. Yukawa structure with maximal predictability,
    G.C. Branco, D. Emmanuel-Costa, R. González Felipe,
    Phys. Lett. B483 (2000) 87. Hep-ph/9905290.

  14. Texture zeros and weak basis transformations,
    G.C. Branco, D. Emmanuel-Costa, R. González Felipe,
    Phys. Lett. B477 (2000) 147. Hep-ph/9911418.

  15. Electroweak baryogenesis in the presence of an isosinglet quark,
    G.C. Branco, D. Delepine, D. Emmanuel-Costa, R. González Felipe,
    Phys. Lett. B442 (1998) 229. Hep-ph/9805302.

  16. A new approach to the yukawa puzzle,
    G.C. Branco, D. Emmanuel-Costa, J.I. Silva-Marcos,
    Phys. Rev. D 56 (1997) 107. Hep-ph/9608477

Proceedings

  1. Gauge anomaly-free constraints and seesaw models,
    David Emmanuel-Costa,
    Talk given at 9th Hellenic School on Elementary Particle Physics (CORFU2009),
    Corfu, Greece, 30 Aug - 6 Sep, 2009; Fortsch. Phys. 58 (2010) 682.

  2. Unifying gauge couplings at the string scale,
    David Emmanuel-Costa, Ricardo Gonzalez Felipe,
    Talk given at 8th Hellenic School on Elementary Particle Physics (CORFU2005),
    Corfu, Greece, 4-26 Sep 2005; J. Phys. Conf. Ser. 53 (2006) 684, Hep-ph/0606012

  3. CP Violation and the Flavour Puzzle:
    Symposium in Honour of Gustavo C. Branco. GustavoFest 2005
    D. Emmanuel-Costa, (Ed.), L. Lavoura, (Ed.), F. Mota, (Ed.), P.A. Parada, (Ed.), M.N. Rebelo, (Ed.), J.I. Silva-Marcos, (Ed.).
    Celebration of Gustavo C. Branco's 60th Birthday.
    Lisbon, Portugal, 19-20 Jul 2005.

Poster

Workshop-100325.pdf

Teaching

Teoria de Grupos em Física

Página da disciplina

Mecânica e ondas

Notas dos testes (2007)

Computing and Programming

My Personal FAQ

Programming - My Personal Asked Questions and the answers I have found

Perl Programs

sortref.pl - A tool for sorting references in a LaTeX file

Java Programming

Michael Thomas Flanagan's Java Scientific Library
Java - A resumé for Java programming

Javascript Programs

Celcius/Fahrenheit Conversions:
Celcius
Fahrenheit

Physics

Seesaw interactions:
$ \frac{\nu_i\nu_j\phi^0\phi^0}{\Lambda} $

Search Engines

Enter a SPIRES Search Command(SLAC):




Searching on Google:

IMDB: (Film Search)


Links

CFTP links

Seminars at CFTP
Members

Deutsch

Grammar

Naturality

The Country where I was born.
The city where I was born.
The French DOM TOM

Chás

Bien Manger
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Admirable Tea Boutique
Mariage Frères

Cinema

The Greatest Films
CineGuide
Mouse
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Cinemas Medeia Millenium

Computing

Java Numerics
SSH
Linux
Freshmeat
Scientific Applications on Linux

Computer Algebra Systems

FORM

Culture

Web Museum
The Human Language Page
The Human Alphbeth Page

Funny Sites

42 ways to distribute DeCSS
Flour volume vs. weight chart:
CupGramOuncePoundKilogram
1/426g0.9 oz0.06 lb0.026Kg
1/334g1.2 oz0.07 lb0.034Kg
1/252g1.8 oz0.12 lb0.052Kg
5/864g2.2 oz0.14 lb0.064Kg
2/368g2.4 oz0.15 lb0.068Kg
3/477g2.7 oz0.17 lb0.077Kg
1102g3.6 oz0.22 lb0.102Kg
1 tablespoon of flour = approx. 8g or 1/3 oz
3 tablespoons of flour = approx. 25g or 1 oz


March 26th 2009 (today: ) David Emmanuel-Costa