String Phenomenology
How does the geometry of extra dimensions shape the physics of our four-dimensional world?
Moduli, supergravity and quantum gravity
Warped throats, anti-branes and non-linear supergravity, and the swampland conjectures that constrain which effective theories can come from quantum gravity.
Heterotic orbifolds and their symmetries
Coupling selection rules, discrete R-symmetries and modular symmetry, and moduli stabilisation in heterotic string models close to the Standard Model.
Selected papers 11
Moduli, supergravity and quantum gravity
- A guide to frames, 2π’s, scales and corrections in string compactificationsB. Valeixo Bento, D. Chakraborty, S. Parameswaran, I. ZavalaInt. J. Mod. Phys. D 34 (2025) 2530003 arXiv:2301.05178
- The Stückelberg Path to Pure de Sitter SupergravityS. Bansal, S. Nagy, A. Padilla, I. ZavalaPhys. Rev. D 111 (2025) arXiv:2411.05710
- Gravity at the Tip of the ThroatB. Valeixo Bento, D. Chakraborty, S. L. Parameswaran, I. ZavalaJHEP 09 (2022) 208 arXiv:2204.02086
- Anti-D3 branes and moduli in non-linear supergravityM. P. García del Moral, S. Parameswaran, N. Quiroz, I. ZavalaJHEP 10 (2017) 185 arXiv:1707.07059
- Warping the Weak Gravity ConjectureK. Kooner, S. Parameswaran, I. ZavalaPhys. Lett. B 759 (2016) 402 arXiv:1509.07049
Heterotic orbifolds and their symmetries
- Discrete R-symmetries and Anomaly Universality in Heterotic OrbifoldsN. G. Cabo Bizet, T. Kobayashi, D. K. Mayorga Peña, S. L. Parameswaran, M. Schmitz, I. ZavalaJHEP 02 (2014) 098 arXiv:1308.5669
- R-charge Conservation and More in Factorizable and Non-Factorizable OrbifoldsN. G. Cabo Bizet, T. Kobayashi, D. K. Mayorga Peña, S. L. Parameswaran, M. Schmitz, I. ZavalaJHEP 05 (2013) 076 arXiv:1301.2322
- Revisiting Coupling Selection Rules in Heterotic Orbifold ModelsT. Kobayashi, S. L. Parameswaran, S. Ramos-Sánchez, I. ZavalaJHEP 05 (2012) 008 arXiv:1107.2137
- On Moduli Stabilisation and de Sitter Vacua in MSSM Heterotic OrbifoldsS. Parameswaran, S. Ramos-Sánchez, I. ZavalaJHEP 01 (2011) 071 arXiv:1009.3931
- Oddness from RigidnessS. Förste, I. ZavalaJHEP 07 (2008) 086 arXiv:0806.2328
- Orientifold’s Landscape: Non-Factorisable Six-ToriS. Förste, C. Timirgaziu, I. ZavalaJHEP 10 (2007) 025 arXiv:0707.0747