GOTHAM lab
@gotham-lab.bsky.social
Our two youngest members, @frandilisante.bsky.social and Hernán Gracia, were awarded yesterday as the best Master’s and Bachelor’s students at the San Alberto Magno festivity in our Faculty of Science at @unizar.es
Congratulations, and keep enjoying the research journey!! 🚀
Congratulations, and keep enjoying the research journey!! 🚀
November 14, 2025 at 11:11 PM
Our two youngest members, @frandilisante.bsky.social and Hernán Gracia, were awarded yesterday as the best Master’s and Bachelor’s students at the San Alberto Magno festivity in our Faculty of Science at @unizar.es
Congratulations, and keep enjoying the research journey!! 🚀
Congratulations, and keep enjoying the research journey!! 🚀
This week we are hosting Olga Vasilieva from Univalle (Colombia), to discuss new approaches to mitigate vector-borne diseases in both plants and human populations.
Yesterday we had the pleasure of attending her talk on control mechanisms to eliminate Diaphorina citri, super interesting!!!
Yesterday we had the pleasure of attending her talk on control mechanisms to eliminate Diaphorina citri, super interesting!!!
September 10, 2025 at 5:40 PM
This week we are hosting Olga Vasilieva from Univalle (Colombia), to discuss new approaches to mitigate vector-borne diseases in both plants and human populations.
Yesterday we had the pleasure of attending her talk on control mechanisms to eliminate Diaphorina citri, super interesting!!!
Yesterday we had the pleasure of attending her talk on control mechanisms to eliminate Diaphorina citri, super interesting!!!
4/4 Finally, we establish a general correspondence between our model and broader classes of competing social contagion dynamics with symmetry breaking, recovering previous results as limiting cases.
September 9, 2025 at 8:59 AM
4/4 Finally, we establish a general correspondence between our model and broader classes of competing social contagion dynamics with symmetry breaking, recovering previous results as limiting cases.
3/4 Groups induce discontinuous (explosive) transitions between fully honest and fully corrupt regimes, separated by a bistable phase!
Importantly, this abrupt behavior disappears in the pairwise limit, highlighting the destabilizing effect of group interactions.
Importantly, this abrupt behavior disappears in the pairwise limit, highlighting the destabilizing effect of group interactions.
September 9, 2025 at 8:59 AM
3/4 Groups induce discontinuous (explosive) transitions between fully honest and fully corrupt regimes, separated by a bistable phase!
Importantly, this abrupt behavior disappears in the pairwise limit, highlighting the destabilizing effect of group interactions.
Importantly, this abrupt behavior disappears in the pairwise limit, highlighting the destabilizing effect of group interactions.
2/4 We introduce a higher-order model to study the emergence of systemic corruption in populations where individuals interact through group structures. By including groups, we capture the influence of peer pressure in group settings.
September 9, 2025 at 8:59 AM
2/4 We introduce a higher-order model to study the emergence of systemic corruption in populations where individuals interact through group structures. By including groups, we capture the influence of peer pressure in group settings.
Asado grupal para cerrar el curso académico. A pesar del calor a la brasa sabe mejor!!!
June 28, 2025 at 5:19 PM
Asado grupal para cerrar el curso académico. A pesar del calor a la brasa sabe mejor!!!
Hoy pleno de GoThAM en la sesión de posters de #Fises25 !! @difensc-rsef.bsky.social
June 19, 2025 at 2:43 PM
Hoy pleno de GoThAM en la sesión de posters de #Fises25 !! @difensc-rsef.bsky.social
Habemus new doc in the lab! 🎓
Big congrats to @pvalganon.bsky.social for a superb PhD thesis!
It has been great to have you with us these years and wish you a vibrant and exciting scientific journey ahead. 🚀
Congrats also to the supervisors @sorianopanos.bsky.social & @gomezgardenes.bsky.social
Big congrats to @pvalganon.bsky.social for a superb PhD thesis!
It has been great to have you with us these years and wish you a vibrant and exciting scientific journey ahead. 🚀
Congrats also to the supervisors @sorianopanos.bsky.social & @gomezgardenes.bsky.social
May 30, 2025 at 7:52 PM
Habemus new doc in the lab! 🎓
Big congrats to @pvalganon.bsky.social for a superb PhD thesis!
It has been great to have you with us these years and wish you a vibrant and exciting scientific journey ahead. 🚀
Congrats also to the supervisors @sorianopanos.bsky.social & @gomezgardenes.bsky.social
Big congrats to @pvalganon.bsky.social for a superb PhD thesis!
It has been great to have you with us these years and wish you a vibrant and exciting scientific journey ahead. 🚀
Congrats also to the supervisors @sorianopanos.bsky.social & @gomezgardenes.bsky.social
5/6 📍It doesn't end there….in itinere contagions are also a key force behind epidemic delocalization.
We find that they precipitate a transition from localized outbreaks (confined to vulnerable patches) to a widespread propagation.
🧭 This drastically shifts the spatial epidemic landscape.
We find that they precipitate a transition from localized outbreaks (confined to vulnerable patches) to a widespread propagation.
🧭 This drastically shifts the spatial epidemic landscape.
May 20, 2025 at 5:44 PM
5/6 📍It doesn't end there….in itinere contagions are also a key force behind epidemic delocalization.
We find that they precipitate a transition from localized outbreaks (confined to vulnerable patches) to a widespread propagation.
🧭 This drastically shifts the spatial epidemic landscape.
We find that they precipitate a transition from localized outbreaks (confined to vulnerable patches) to a widespread propagation.
🧭 This drastically shifts the spatial epidemic landscape.
4/6 🧨 In itinere contagion counteracts 🥊 epidemic detriment – the idea that mobility (up to a critical value) suppresses epidemic spread.
We show that transit-based infections reshape this boundary, modifying the critical conditions under which mobility boosts or suppresses epidemic outbreaks.
We show that transit-based infections reshape this boundary, modifying the critical conditions under which mobility boosts or suppresses epidemic outbreaks.
May 20, 2025 at 5:44 PM
4/6 🧨 In itinere contagion counteracts 🥊 epidemic detriment – the idea that mobility (up to a critical value) suppresses epidemic spread.
We show that transit-based infections reshape this boundary, modifying the critical conditions under which mobility boosts or suppresses epidemic outbreaks.
We show that transit-based infections reshape this boundary, modifying the critical conditions under which mobility boosts or suppresses epidemic outbreaks.
3/6 ⚠️ Including in itinere infections significantly lowers 🔻 the epidemic threshold and increases disease prevalence!
We show that neglecting in-transit infections leads to a serious underestimation of epidemic severity and population vulnerability. A hidden risk that standard models miss 🧩
We show that neglecting in-transit infections leads to a serious underestimation of epidemic severity and population vulnerability. A hidden risk that standard models miss 🧩
May 20, 2025 at 5:44 PM
3/6 ⚠️ Including in itinere infections significantly lowers 🔻 the epidemic threshold and increases disease prevalence!
We show that neglecting in-transit infections leads to a serious underestimation of epidemic severity and population vulnerability. A hidden risk that standard models miss 🧩
We show that neglecting in-transit infections leads to a serious underestimation of epidemic severity and population vulnerability. A hidden risk that standard models miss 🧩
2/6 Most metapopulation-based epidemic models assume people only spread disease within specific locations.
🚌 But what about infections acquired on the move?
We extended our MIR framework introducing infections that happen while commuting, in particular on public transport, key in urban settings.
🚌 But what about infections acquired on the move?
We extended our MIR framework introducing infections that happen while commuting, in particular on public transport, key in urban settings.
May 20, 2025 at 5:44 PM
2/6 Most metapopulation-based epidemic models assume people only spread disease within specific locations.
🚌 But what about infections acquired on the move?
We extended our MIR framework introducing infections that happen while commuting, in particular on public transport, key in urban settings.
🚌 But what about infections acquired on the move?
We extended our MIR framework introducing infections that happen while commuting, in particular on public transport, key in urban settings.
@gallartaspablo.bsky.social talking about the emergence of innovations and the role of reputation at @complenet.bsky.social !
April 23, 2025 at 5:16 PM
@gallartaspablo.bsky.social talking about the emergence of innovations and the role of reputation at @complenet.bsky.social !
@santiagolaot.bsky.social now at @complenet.bsky.social in Fortaleza talking about higher-order interactions and the emergence of collective states #complenet2025
April 22, 2025 at 7:08 PM
@santiagolaot.bsky.social now at @complenet.bsky.social in Fortaleza talking about higher-order interactions and the emergence of collective states #complenet2025
4/5 We then explore the “invasion” threshold (i.e. how local outbreaks can become global 🌏) for low mobility scenarios.
Agents with low exploratory behavior spend less time in new places, reducing the spread window and raising the required mobility to generate a global epidemic.
Agents with low exploratory behavior spend less time in new places, reducing the spread window and raising the required mobility to generate a global epidemic.
March 28, 2025 at 2:12 PM
4/5 We then explore the “invasion” threshold (i.e. how local outbreaks can become global 🌏) for low mobility scenarios.
Agents with low exploratory behavior spend less time in new places, reducing the spread window and raising the required mobility to generate a global epidemic.
Agents with low exploratory behavior spend less time in new places, reducing the spread window and raising the required mobility to generate a global epidemic.
3/5 By creating the new generation matrix, we obtain the epidemic threshold ⚠️.
Interestingly, it depends on how frequently agents return versus how much they roam:
Random-walk–dominated dynamics (low return, high mobility) typically yield a higher threshold for 🦠 to spread!
Interestingly, it depends on how frequently agents return versus how much they roam:
Random-walk–dominated dynamics (low return, high mobility) typically yield a higher threshold for 🦠 to spread!
March 28, 2025 at 2:12 PM
3/5 By creating the new generation matrix, we obtain the epidemic threshold ⚠️.
Interestingly, it depends on how frequently agents return versus how much they roam:
Random-walk–dominated dynamics (low return, high mobility) typically yield a higher threshold for 🦠 to spread!
Interestingly, it depends on how frequently agents return versus how much they roam:
Random-walk–dominated dynamics (low return, high mobility) typically yield a higher threshold for 🦠 to spread!
2/5 We developed a metapopulation formalism in which the key parameter is the “return” probability, blending commuting and exploratory behaviors in a balanced way:
High return → more commuting 🚌 (agents quickly go back), low return → more exploration 🧭 (random walks).
High return → more commuting 🚌 (agents quickly go back), low return → more exploration 🧭 (random walks).
March 28, 2025 at 2:12 PM
2/5 We developed a metapopulation formalism in which the key parameter is the “return” probability, blending commuting and exploratory behaviors in a balanced way:
High return → more commuting 🚌 (agents quickly go back), low return → more exploration 🧭 (random walks).
High return → more commuting 🚌 (agents quickly go back), low return → more exploration 🧭 (random walks).
5/6 These spectral changes have profound effects on synchronizability:
☑️ Large hyperedge overlap hinders synchronizability. In particular, large intra-order overlap can fragment structures, making global synchronization impossible!
☑️ On the other hand, large overlap promotes local synchronization
☑️ Large hyperedge overlap hinders synchronizability. In particular, large intra-order overlap can fragment structures, making global synchronization impossible!
☑️ On the other hand, large overlap promotes local synchronization
March 4, 2025 at 9:33 AM
5/6 These spectral changes have profound effects on synchronizability:
☑️ Large hyperedge overlap hinders synchronizability. In particular, large intra-order overlap can fragment structures, making global synchronization impossible!
☑️ On the other hand, large overlap promotes local synchronization
☑️ Large hyperedge overlap hinders synchronizability. In particular, large intra-order overlap can fragment structures, making global synchronization impossible!
☑️ On the other hand, large overlap promotes local synchronization
4/6 Intra-order overlap polarizes the Laplacian eigenvalue spectrum by promoting mesoscale clusters.
Inter-order overlap can promote the mesoscale localization (large overlap) or distort it (low overlap).
There is a hierarchy 🥇🥈🥉, the larger the interaction order, the stronger these effects!!!
Inter-order overlap can promote the mesoscale localization (large overlap) or distort it (low overlap).
There is a hierarchy 🥇🥈🥉, the larger the interaction order, the stronger these effects!!!
March 4, 2025 at 9:33 AM
4/6 Intra-order overlap polarizes the Laplacian eigenvalue spectrum by promoting mesoscale clusters.
Inter-order overlap can promote the mesoscale localization (large overlap) or distort it (low overlap).
There is a hierarchy 🥇🥈🥉, the larger the interaction order, the stronger these effects!!!
Inter-order overlap can promote the mesoscale localization (large overlap) or distort it (low overlap).
There is a hierarchy 🥇🥈🥉, the larger the interaction order, the stronger these effects!!!
3/6 To answer this, we build a general framework based on an overlap matrix based upon:
☑️ Intra-order hyperedge overlap (shared nodes within same-order groups).
☑️ Inter-order hyperedge overlap (shared nodes across different-order groups).
☑️ Intra-order hyperedge overlap (shared nodes within same-order groups).
☑️ Inter-order hyperedge overlap (shared nodes across different-order groups).
March 4, 2025 at 9:33 AM
3/6 To answer this, we build a general framework based on an overlap matrix based upon:
☑️ Intra-order hyperedge overlap (shared nodes within same-order groups).
☑️ Inter-order hyperedge overlap (shared nodes across different-order groups).
☑️ Intra-order hyperedge overlap (shared nodes within same-order groups).
☑️ Inter-order hyperedge overlap (shared nodes across different-order groups).
2/6 In our former @naturecomms.bsky.social (rdcu.be/d5P92), we showed that large intra-order hyperedge overlap hinders explosive transitions in synchronization and contagion dynamics. Now, we ask:
How does hyperedge overlap affect synchronization stability itself?
How does hyperedge overlap affect synchronization stability itself?
March 4, 2025 at 9:33 AM
2/6 In our former @naturecomms.bsky.social (rdcu.be/d5P92), we showed that large intra-order hyperedge overlap hinders explosive transitions in synchronization and contagion dynamics. Now, we ask:
How does hyperedge overlap affect synchronization stability itself?
How does hyperedge overlap affect synchronization stability itself?
Amazing and inspiring special talk at the @cs3conference.bsky.social by our favorite Joker: our longtime friend and collaborator Alex Arenas from @urv.cat
Congrats Alex on the CSS award, you rock!!!
Congrats Alex on the CSS award, you rock!!!
February 20, 2025 at 5:39 PM
Amazing and inspiring special talk at the @cs3conference.bsky.social by our favorite Joker: our longtime friend and collaborator Alex Arenas from @urv.cat
Congrats Alex on the CSS award, you rock!!!
Congrats Alex on the CSS award, you rock!!!
Last contribution from our lab at @cs3conference.bsky.social comes from our young but already consolidated expert on social affairs Hugo Pérez-Martínez talking about polarization and higher-order interactions.
February 20, 2025 at 4:14 PM
Last contribution from our lab at @cs3conference.bsky.social comes from our young but already consolidated expert on social affairs Hugo Pérez-Martínez talking about polarization and higher-order interactions.
... and morning continues at @cs3conference.bsky.social with our young promise @santiagolaot.bsky.social giving a superb talk about epidemic models coupled with viral evolution. Bravo Santi!!
February 20, 2025 at 11:42 AM
... and morning continues at @cs3conference.bsky.social with our young promise @santiagolaot.bsky.social giving a superb talk about epidemic models coupled with viral evolution. Bravo Santi!!
Morning starts with two dear external members of our lab @acardillo.bsky.social and @sorianopanos.bsky.social presenting at @cs3conference.bsky.social
February 20, 2025 at 11:37 AM
Morning starts with two dear external members of our lab @acardillo.bsky.social and @sorianopanos.bsky.social presenting at @cs3conference.bsky.social