Augusto Sagnotti

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Professore Ordinario di Fisica Teorica alla Scuola Normale dal 2005

• Laurea, Ing. Elettronica (U. Roma, 1978), 110/110 e lode
  Tesi: Propagazione di luce parzialmente coerente in fibre ottiche
  Advs: Profs. B. Crosignani and Paolo Di Porto (Premio Carosio, 1979)
• M.S., Electrical Engineering (Caltech, 1979)
• Ph.D., Theoretical Physics (Caltech, 1983)
  Tesi: Topics in supersymmetry theory
  Adv: Prof. J.H. Schwarz
• Research Fellow (Caltech) 1983-84
• Miller Fellow (U.C.Berkeley) 1984-86
• Ricercatore (U. Roma “Tor Vergata”) 1985-93
• Professore Associato (U. Roma “Tor Vergata”) 1994-99
• Professore Ordinario (U. Roma “Tor Vergata”) 2000-05
• Professore Ordinario (Scuola Normale Superiore) 2005-

Premi e Riconoscimenti:

• Premio Carosio (U. Roma “La Sapienza”, 1979)
• Miller Fellowship (U.C. Berkeley, 1984)
• Premio SIGRAV 1994 (con M. Bianchi)
• Andrejewski Lecturer (Humboldt U., Berlin, 1999)
• Premio Margherita Hack (Ministero Italiano della Cultura e INAF, 2014)
• Alexander von Humboldt Research Award, 2018
• Roberto Petronzio Lecture (Univ. Roma “Tor Vergata”, 2024)

Ricerca:

Teoria dei Campi, Gravità Quantistica, Teoria delle Stringhe, Supergravità, CFT in 2D, Rottura della Supersimmetria, Spin elevati, Cosmologia, teoria di Born-Infeld

Profilo INSPIRE: circa 12200 citazioni, h=55, 3 TOP 500, 11 TOP 250, 21 TOP 100, 24 TOP 50 (aprile 2024)

Libri:

• “String Theory”, eds. C. Procesi and AS (Academic Press, 1988)
• “String Theory, Quantum Gravity and the Unification of the Fundamental Interactions”, eds. M. Bianchi, F. Fucito, V. Marinari and AS (World Scientific, 1992)
• “Classical and Quantum Statistical Physics. Fundamentals and Advanced Topics”, C. Heissenberg and AS (Cambridge University Press, 2022) [Cover][Errata & Additions]

Didattica:

• Statistical Physics
• Classical Field Theory
• Quantum Field Theory
• Mathematical Methods
• String Theory
• Classical Mechanics
  
  Voci per l’Enciclopedia Italiana:
• “Teoria delle Stringhe”, Enciclopedia della Scienza, vol. IX (Ist. Enc.Treccani, 2003)
• “Supersimmetria”, Enciclopedia della Scienza e della Tecnica (Ist. Enc. Treccani, 2006, with F. Fucito)

Alcune visite:

U. Warsaw (1988,2014), DESY (1989,2019), IHES (1990,1996), UCLA (1992,2015), Caltech (1992,2001,2015), E. Polytechnique (1992,1994,1995,1999,2005,2008,2014,2016,2018), CERN (1996,2004), CERN Scientific Associate (2005,2014), Inst. for Adv. Study, MIT, Harvard (1996), Humboldt U. (1999), E. Normale Superieure (2000), LPT-Orsay (2001), U. Cambridge, U. Oxford (2001), U. Uppsala (2004), LMU Munich (2008), U. Wien (2012), U. Paris VII (2007,2008,2009), Tokyo Metropolitan U. (2013)

• Membro della Commissione Nazionale IV, INFN (1988-1996)
• Coord. dei nodi Italiani in tre contratti EU
• Coord. di due contratti INTAS
• Coord. del nodo “Tor Vergata” in due PRIN
• Coord. del nodo di Pisa nella IS INFN-GSS
• Coordinatore Nazionale dei PRIN 2008-024045, 2009-KHZKRX, 2017-CC72MK
• INFN Scientist-in-charge, ERC Adv. Grant n. 226455 (SUPERFIELDS)

Studenti in Istituzioni Accademiche:

M. Bianchi (Prof., U. Roma “Tor Vergata”), G. Pradisi (Prof. Ass., U. Roma “Tor Vergata”), C. Angelantonj (Prof., U. Torino), D. Fioravanti (INFN I Ric.- Bologna), F. Riccioni (INFN I Ric.– Roma La Sapienza), G. D’Appollonio (U. Cagliari), D. Francia (U. Roma Tre), M. Nicolosi (U. Perugia), A. Campoleoni (FNRS – U. Mons), M. Taronna (Prof. Ass., U. Napoli)

Contributi principali (con dettagli su lavori 50+, da INSPIRE)

1. Divergenze della Relatività Generale:

• M.H. Goroff and AS, “Quantum Gravity At Two Loops”, Phys. Lett. B160 (1985) 81 [430 cites]
• M.H. Goroff and AS, “The Ultraviolet Behavior of Einstein Gravity”, Nucl. Phys. B266 (1986) 709 [829 cites]

2. Vincoli sui gruppi di Chan-Paton (solo U, O, USp), costruzione dinamica e stringhe aperte:

• N. Marcus and AS, “Tree Level Constraints on Gauge Groups for Type I Superstrings’‘, Phys. Lett. B119 (1982) 97 [151 cites]
• N. Marcus and AS, “Group Theory from Quarks at the Ends of Strings’‘, Phys. Lett. B188 (1987) 58 [138 cites]

3. Relazione tra superstringhe IIB e I (origine della teoria degli orientifolds):

• AS, “Open Strings And Their Symmetry Groups”, in Cargese '87, “Non-perturbative Quantum Field Theory”, eds. G. 't Hooft et al., p. 521, riprodotto in arXiv:hep-th/0208020 [492 cites]

4. Proprietà basilari degli orientifolds:

• G. Pradisi and AS, “Open String Orbifolds”, Phys. Lett. B216 (1989) 59 [452 cites]
• M. Bianchi and AS, “On The Systematics Of Open String Theories”, Phys. Lett. B247 (1990) 517 [580 cites]
• M. Bianchi and AS, “Twist Symmetry And Open String Wilson Lines”, Nucl. Phys. B361 (1991) 519 [449 cites]
• M. Bianchi, G. Pradisi and AS, “Toroidal compactification and symmetry breaking in open string theories”, Nucl. Phys. B376 (1992) 365 [400 cites]
• AS, “A Note on the Green-Schwarz mechanism in open string theories”, Phys. Lett. B294 (1992) 196 [arXiv:hep-th/9210127] [551 cites]

5. Proprietà basilari delle Teorie Conformi 2D su superfici non orientabili:

• D. Fioravanti, G. Pradisi and AS, “Sewing constraints and nonorientable open strings” , Phys. Lett. B321 (1994) 349 [arXiv:hep-th/9311183] [104 cites]
• G. Pradisi, AS and Y.S. Stanev, “Planar duality in SU(2) WZW models” , Phys. Lett. B354 (1995) 279 [arXiv:hep-th/9503207] [166 cites]
• G. Pradisi, AS and Y.S. Stanev, “The Open descendants of nondiagonal SU(2) WZW Models”, Phys. Lett. B356 (1995) 230 [arXiv:hep-th/9506014] [161 cites]
• G. Pradisi, AS and Y.S. Stanev, “Completeness Conditions for Boundary Operators in 2D Conformal Field Theory”, Phys. Lett. B381 (1996) 97 [arXiv:hep-th/9603097] [226 cites]

6. Primo orientifold 4D con tre generazioni di materia chirale:

• C. Angelantonj, M. Bianchi, G. Pradisi, AS and Y.S. Stanev , “Chiral asymmetry in four-dimensional open- string vacua” , Phys. Lett. B385 (1996) 96 [arXiv:hep-th/9606169] [271 cites]

7. La stringa 0B’ in dieci dimensioni:

• AS, “Some properties of open string theories”, arXiv:hep-th/9509080, presented at SUSY '95 (Palaiseau, giugno 1995) [205 cites]
• AS, “Surprises in open-string perturbation theory”, Nucl. Phys. Proc. Suppl. 56B (1997) 332 [arXiv:hep-th/9702093] [190 cites]

8. Due nuovi fenomeni, “brane supersymmetry” and “brane supersymmetry breaking”, e uno dei primi studi delle deformazioni magnetiche nelle stringhe aperte:

• I. Antoniadis, E. Dudas and AS, “Supersymmetry breaking, open strings and M-theory”, Nucl. Phys. B544 (1999) 469 [arXiv:hep-th/9807011 [160 cites]
• I. Antoniadis, E. Dudas and AS, “Brane supersymmetry breaking”, Phys. Lett. B464 (1999) 38 [arXiv:hep-th/9908023] [321 cites]
• C. Angelantonj, I. Antoniadis, G. D'Appollonio, E. Dudas and AS, “Type I vacua with brane supersymmetry breaking’‘, Nucl. Phys. B572 (2000) 36  [hep-th/9911081] [218 cites]
• C. Angelantonj, I. Antoniadis, E. Dudas and AS, “Type-I strings on magnetised orbifolds and brane transmutation”, Phys. Lett. B489 (2000) 223 [arXiv:hep-th/0007090] [347 cites]

9. Un articolo di rassegna per Physics Reports:

• C. Angelantonj and AS, “Open strings”, Phys. Rept. 371 (2002) 1 [Erratum-ibid. 376 (2003) 339] [arXiv:hep-th/0204089] [496 cites]

10. La descrizione geometrica, estendendo i casi di spin-1 (Maxwell) and spin-2 (Einstein), per campi di gauge di spin arbitrario:

• D. Francia and AS, “Free geometric equations for higher spins”, Phys. Lett. B543 (2002) 303 [arXiv:hep-th/0207002] [250 cites]
• D. Francia and AS, “On the geometry of higher-spin gauge fields”, Class.Quant. Grav. 20 (2003) S473 [arXiv:hep-th/0212185] [222 cites]
• D. Francia and AS, “Minimal local Lagrangians for higher-spin geometry”, Phys. Lett. B624 (2005) 93 [arXiv:hep-th/0507144] [94 cites]
• AS and M. Tsulaia, “On higher spins and the tensionless limit of string theory”, Nucl. Phys. B682 (2004) 83 [arXiv:hep-th/0311257] [263 cites]
• D. Francia, J. Mourad and AS, “Current exchanges and unconstrained higher spins”, Nucl. Phys. B773 (2007) 203 [arXiv:hep-th/0701163] [129 cites]
• D. Francia, J. Mourad and AS, “(A)dS exchanges and partially-massless higher spins'', Nucl. Phys. B804 (2008) 383 [arXiv:0803.3832 [hep-th]] [54 cites]
• A. Campoleoni, D. Francia, J. Mourad and AS," Unconstrained Higher Spins of Mixed Symmetry. I. Bose Fields", Nucl. Phys. B815 (2009) 289 [arXiv:0810.4350 [hep-th]] [91 cites]
• A. Campoleoni, D. Francia, J. Mourad and AS, "Unconstrained Higher Spins of Mixed Symmetry. II. Fermi Fields", Nucl. Phys. B828 (2010) 405 [arXiv:0904.4447 [hep-th]] [70 cites]
• AS, “Notes on Strings and Higher Spins’‘, J. Phys. A46 (2013) 214006 [arXiv:1112.4285 [hep-th]] (Lectures at Erice 2010) [123 cites]

11. Correnti conservate e vertici cubici di spin arbitrario dalla Teoria delle Stringhe:

• AS and M. Taronna, “String Lessons for Higher-Spin Interactions’‘, Nucl. Phys. B842 (2011) 299-361 [arXiv:1006.5242 [hep-th]] [196 cites]

Attività in corso:

1.  La proposta di un legame tra “brane supersymmetry breaking” e inizio dell’inflazione, e alcuni possibili effetti sul CMB:

• E. Dudas, N. Kitazawa and AS, “On Climbing Scalars in String Theory’‘, Phys. Lett. B694 (2010) 80 [arXiv:1009.0874 [hep-th]] [55 cites]
• E. Dudas, N. Kitazawa, S. P. Patil and AS, “CMB Imprints of a Pre-Inflationary Climbing Phase’‘, JCAP 1205 (2012) 012 [82 cites]
• P. Fré, AS and A. S. Sorin, “Integrable Scalar Cosmologies I. Foundations and links with String Theory’‘, Nucl. Phys. B877 (2013) 1028 [arXiv:1307.1910 [hep-th]] [76 cites]
• N. Kitazawa and AS, “Pre-inflationary clues from String Theory?’‘, JCAP 1404(2014) 017 [arXiv:1402.1418 [hep-th]]
• A. Gruppuso and AS, “Observational Hints of a Pre--Inflationary Scale?’‘, [arXiv:1506.08093 [astro-ph.CO]], Int. J. Mod. Phys D. 24 (2015) 12, 1544008. Hon. Mention, 2015 Competition of Gravity Research Foundation
• A. Gruppuso, N. Kitazawa, N. Mandolesi, P. Natoli and AS, “Pre-Inflationary Relics in the CMB?’‘, Phys. Dark Univ. 11 (2016) 68 [arXiv:1508.00411 [astro-ph.CO]] [52 cites]
• A. Gruppuso, N. Kitazawa, M. Lattanzi, N. Mandolesi, P. Natoli and AS, “The Evens and Odds of CMB Anomalies’‘, arXiv:1712.03288 [astro-ph.CO], Phys. Dark Univ. 20 (2018) 49 [arXiv:1712.03288 [astro-ph.CO]]

2.  Supercampi vincolati e realizzazioni non-lineari della Supersimmetria in Supergravità, con applicazioni alla Cosmologia:

• I. Antoniadis, E. Dudas, S. Ferrara and AS, “The Volkov-Akulov-Starobinsky supergravity'', Phys. Lett. B733 (2014) 32 [arXiv:1403.3269 [hep-th]] [220 cites]
• E. Dudas, S. Ferrara, A. Kehagias and AS, “Properties of Nilpotent Supergravity’‘, JHEP 1509 (2015) 217 [arXiv:1507.07842 [hep-th]] [99 cites]
• S. Ferrara, M. Porrati and AS, “Scale invariant Volkov–Akulov supergravity’‘, Phys. Lett. B749 (2015) 589 [arXiv:1508.02939 [hep-th]]
• E. Dudas, S. Ferrara and AS, “A superfield constraint for N= 2 → N = 0 breaking’‘, JHEP 1708 (2017) 109 [arXiv:1707.03414 [hep-th]]

3. Generalizzazioni abeliane della teoria di Born-Infeld:

• S. Ferrara, M. Porrati and AS, “N = 2 Born-Infeld attractors’‘, JHEP 1412 (2014) 065 [arXiv:1411.4954 [hep-th]]
• S. Ferrara, M. Porrati, AS, R. Stora and A. Yeranyan, “Generalized Born-Infeld Actions and Projective Cubic Curves’‘, Fortsch. Phys. 63 (2015) 189 [arXiv:1412.3337 [hep-th]]

4. Vuoti con Rottura di Supersymmetria e Problemi di Stabilità:

• E. Dudas, J. Mourad and AS, “Charged and uncharged D-branes in various string theories’‘, Nucl. Phys. B620 (2002) 109 [hep-th/0107081] [73 cites]
• E. Dudas, G. Pradisi, M. Nicolosi and AS, “On tadpoles and vacuum redefinitions in string theory’‘, Nucl. Phys. B708 (2005) 3 [hep-th/0410101] [82 cites]
• J. Mourad and AS, “AdS Vacua from Dilaton Tadpoles and Form Fluxes’‘, Phys. Lett. B768 (2017) 92 [arXiv:1612.08566 [hep-th]]
• J. Mourad and A. Sagnotti, “An update on brane supersymmetry breaking,'' [arXiv:1711.11494 [hep-th]].
• I. Basile, J. Mourad and AS,”On Classical Stability with Broken Supersymmetry’‘, JHEP 1901 (2019) 174  [arXiv:1811.11448 [hep-th]]
• J. Mourad and AS, “On boundaries, charges and Fermi fields’‘, Phys. Lett. B804 (2020), 135368 [arXiv:2002.05372 [hep-th]].
• P. Pelliconi and AS, “Integrable Models and Supersymmetry Breaking’‘, Nucl. Phys. B965 (2021), 115363 [arXiv:2102.06184 [hep-th]]
• J. Mourad and AS, “String (In)Stability Issues with Broken Supersymmetry’‘, [arXiv:2107.04064 [hep-th]]. Invited contribution to the special issue of Letters in High Energy Physics (LHEP) on “Swampland and String Theory Landscape”, edited by I. Antoniadis, K. Benakli and E. Dudas.
• J. Mourad and AS, “On Warped String Vacuum Profiles and Cosmologies, I. Supersymmetric Strings’‘, [arXiv:2109.06852 [hep-th]], JHEP 12 (2021), 137 [arXiv:2109.06852 [hep-th].
• J. Mourad and AS, “On Warped String Vacuum Profiles and Cosmologies, II. Non-Supersymmetric Strings’‘, JHEP 12 (2021), 138 [arXiv:2109.12328 [hep-th]].
• J. Mourad and AS, “A 4D IIB Flux Vacuum and Supersymmetry Breaking. I. Fermionic Spectrum’‘, [arXiv:2206.03340 [hep-th]], JHEP 08 (2022) [arXiv:2206.03340 [hep-th]] 301.
• J. Mourad and AS,”Non-Supersymmetric Vacua and Self-Adjoint Extensions’‘, JHEP 08 (2023) 041 [arXiv:2305.09587 [hep-th]].
• J. Mourad and AS, “A 4D IIB Flux Vacuum and Supersymmetry Breaking. II. Bosonic Spectrum and Stability’‘, JHEP 11 (2023) 061 [arXiv:2309.04026 [hep-th]].
• J. Mourad and AS, “Effective Orientifolds from Broken Supersymmetry’’, J. Phys. A 57 (2024) no.3, 035401 [arXiv:2309.05268 [hep-th]].

Pubblicazioni non reperibili sul sito di SLAC INSPIRE:

[1] B. Daino, S. Piazzolla and AS, A new method for measuring the index profile of optical fibers, Proc. First European Conference on Optical Communications, Genova, 1978
[2] AS, Propagazione di luce parzialmente coerente in fibre ottiche: applicazione alla misura del profilo d'indice, U. Roma "La Sapienza", 1978. Tesi di Laurea in Ingegneria Elettronica. Premio Carosio 1979
[3] B. Daino, S. Piazzolla and AS, Spatial coherence and index profiling in optical fibres, Optica Acta 26 (1979) 923 [pdf]
[4] AS, Teoria delle Stringhe, voce enciclopedica per Enciclopedia della Scienza, vol IX, La Nuova Scienza (Ist. Enc. Treccani, 2003) [pdf]
[5] F. Fucito e AS, Supersimmetria, contributo a Enciclopedia della Scienza e della Tecnica (Ist. Enc. Treccani, 2007) [pdf]
[6] AS, Roberto Petronzio and the "Tor Vergata" Theory Group [pdf]

Articoli su giornali:

[1] R. Barbieri, P. Fre', M. Vietri, AS, Come limitare il precariato tra i ricercatori, "La Stampa", suppl. "Tuttoscienze".   [pdf]
[2] R. Barbieri, P. Fre', M. Vietri, AS, Date i giovani alla scienza, "Il Sole 24 Ore", suppl. dom.   [pdf]
[3] AS, Musica per Superstringhe, "Il Sole 24 Ore", suppl. dom.  [pdf]
[4] AS, L'illusione delle stringhe (titolo originale: Molto rumore sulle stringhe), "La Stampa" suppl. "Tuttoscienze" [pdf]
[5] Intervista realizzata da Mariella Bertuccelli per "Il Tirreno" [pdf]
[6] AS, I numeri dell'altro universo, "La Stampa", suppl. "Tuttoscienze" [pdf]
[7] Intervista a "Il Faro Online", maggio 2011 [web]
[8] AS, Le imprevedibili vie della ricerca, "Il Manifesto" [pdf]
[9] M. Martellini, AS, E. Sirtori, Ukraine's Pandora box: Is 2014 Kiev next 1914 Sarajevo?, "Russia Direct",  [pdf]
[10] AS, M. Vietri, Lettera al Presidente del Consiglio Dott. Matteo Renzi sulla questione dei Ricercatori [pdf]

Divulgazione:

[1] L'universo sulla quarta corda, Radio Tre Scienza, 8 luglio 2004 [web]
[2] Tentativi di unificazione delle interazioni fondamentali, lezione tenuta al corso di orientamento a San Miniato, sett. 2006 [pdf] [mp3]
[3] Strings, Gravity and Particle Physics: un Colloquio presentato, con leggere modifiche, negli ultimi anni. [pdf]
[4] Intervista a Radio Rai 1 in relazione al contratto ERC "Superfields"
[5] La Relatività Generale come fonte di ispirazione. Lezione GR@100, Parma, novembre 2015 [pdf] Sito WEB con filmati
[6] Forze Fondamentali e Unificazione. Contributo agli atti di un Convegno alla Pontificia Università Lateranense, Roma, 26 maggio 2016 [pdf]
[7] The many lives of Supergravity, CERN Courier vol. 57, n. 1, January/February 2017 (with S. Ferrara) [pdf]
[8] Stringhe, Brane e (Super)Gravità, Ithaca: Viaggio nella Scienza XII, 2018 [pdf]
[9] The Incomplete Revolutions of String Theory, Il Nuovo Saggiatore, 2019 [pdf]

Alcuni seminari:

[1] Andrejewki lectures on Open Strings, Humboldt University, Berlin, 1999 [pdf]
[2] Un seminario sulle costruzioni con stringhe aperte, presentato al Caltech in occasione del 60 compleanno di John H. Schwarz, 2001 [web]
[3] Budapest Lectures on Higher Spins, 2007 [pdf]
[4] Un file legato alle lezioni alla International School of Subnuclear Physics - 49th Course "Searching for the Unexpected and Status of our Knowledge" (Erice, June 24 - July 3) , a “Strings, Branes and Supergravity" - Istanbul (July 31 - August 5) e a QTS7 - Prague 2011 (August 7 - 13) [pdf]
[5] “Low-l CMB from String-Scale SUSY Breaking?”, basato sulle presentazioni alla International School for Subnuclear Physics, 53rd Course, “The Future of our Physics Including New Frontiers”, Erice, June 24 – July 3 2015, e a “Physics on the Riviera 2015”, Sestri Levante, September 16–18 2015 [pdf]
[6] “Brane SUSY Breaking, Non-Linear SUSY and Some Applications”, basato sulle presentazioni alla International School for Subnuclear Physics, 55rd Course, Erice, June 14 – 23 2017, at TFI-2017, Parma, September 11 – 13 2017, and at LACES 2017, Firenze, November 27 – December 1, 2017 [pdf]
[7] “Aspects of SUSY Breaking in String Theory”, based on Colloquia at DESY (aprile 2018) and Stockholm (settembre 2018), and on lectures at the 2018 Brazilian School of Gravitation (Rio de Janeiro, luglio 2018) [pdf]
[8] ”On Broken Supersymmetry and Vacuum Stability in Supergravity and String Theory”, Talk at Bernard Julia’s Fest (Ecole Normale Superieure, Paris, December 2019) [pdf]
[9] “Vacuum (In)stability Issues with Broken Supersymmetry”, in “Quarks”, dedicated to A.D. Sakharov centennial Workshop on “Integrability, Holography, HS gravity and Strings”, Moscow (online), June 2021 [video su YouTube][pdf]
[10] “Stability Issues and Fundamental Forces”, 2024 Roberto Petronzio Lecture (U. Roma “Tor Vergata”, April 2024) [pdf]