In this Ph.D. thesis we construct three classes of new solutions to supergravity theories in various dimensions and study their properties. The first class is reduction ansatz of 10D and 11D supergravity on Ricci-flat and noncompact manifolds. These reductions are from a scaling limit of the famous spherical reductions, and can be solely supported by warp factors. The second class contains a large number of String/M theory solutions that have Lifshitz or Schrodinger scaling symmetry, obtained from marginally deforming the geometry of internal dimensions of previous solutions. We propose that these new solutions are dual to marginal deformations of certain holographic non-relativistic field theories. The last class are singly spinning non-spherical black holes named black rings in 5D $U(1)^3$ supergravity with three dipole charges and three electric charges, which lie in the classification of 5D nonsupersymmetric black holes. We analyze their thermodynamic and global properties. As a byproduct, we embed the three dipole black ring into spacetime that contains background magnetic fields.
","abstract_html":"<p>In this Ph.D. thesis we construct three classes of new solutions to supergravity theories in various dimensions and study their properties. The first class is reduction ansatz of 10D and 11D supergravity on Ricci-flat and noncompact manifolds. These reductions are from a scaling limit of the famous spherical reductions, and can be solely supported by warp factors. The second class contains a large number of String/M theory solutions that have Lifshitz or Schrodinger scaling symmetry, obtained from marginally deforming the geometry of internal dimensions of previous solutions. We propose that these new solutions are dual to marginal deformations of certain holographic non-relativistic field theories. The last class are singly spinning non-spherical black holes named black rings in 5D U(1)3 supergravity with three dipole charges and three electric charges, which lie in the classification of 5D nonsupersymmetric black holes. We analyze their thermodynamic and global properties. As a byproduct, we embed the three dipole black ring into spacetime that contains background magnetic fields.</p>","abstract_has_math":true,"creators":["Zhang, Zhibai"],"institution":"The Graduate School and University Center of The City University of New York","degree_name":"Doctor of Philosophy","degree_level":"Doctoral","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":["Justin Vazquez-Poritz"],"committee_chairs":[],"committee_members":["Andrea Ferroglia","Daniel Kabat","James Liu","Giovanni Ossola","Justin Vazquez-Poritz"],"year":2016,"date_issued":"2016-06-03T07:00:00Z","date_published":"2016-06-03T07:00:00Z","updated_at":"2026-07-24T01:59:14Z","subjects":["Elementary Particles and Fields and String Theory","Gravity","Supergravity","Classical Solution","Black Hole","String Theory","AdS/CFT"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://academicworks.cuny.edu/gc_etds/1298","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Justin Vazquez-Poritz"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Andrea Ferroglia","Daniel Kabat","James Liu","Giovanni Ossola","Justin Vazquez-Poritz"]},{"key":"dc:creator","label":"Author","values":["Zhang, Zhibai"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2016-10-23T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctoral"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Doctor of Philosophy"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["The Graduate School and University Center of The City University of New York"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Elementary Particles and Fields and String Theory","Gravity","Supergravity","Classical Solution","Black Hole","String Theory","AdS/CFT"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://academicworks.cuny.edu/gc_etds/1298"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In this Ph.D. thesis we construct three classes of new solutions to supergravity theories in various dimensions and study their properties. The first class is reduction ansatz of 10D and 11D supergravity on Ricci-flat and noncompact manifolds. These reductions are from a scaling limit of the famous spherical reductions, and can be solely supported by warp factors. The second class contains a large number of String/M theory solutions that have Lifshitz or Schrodinger scaling symmetry, obtained from marginally deforming the geometry of internal dimensions of previous solutions. We propose that these new solutions are dual to marginal deformations of certain holographic non-relativistic field theories. The last class are singly spinning non-spherical black holes named black rings in 5D $U(1)^3$ supergravity with three dipole charges and three electric charges, which lie in the classification of 5D nonsupersymmetric black holes. We analyze their thermodynamic and global properties. As a byproduct, we embed the three dipole black ring into spacetime that contains background magnetic fields.
"]},{"key":"dc:title","label":"Title","values":["New Classical Solutions in Supergravity"]}]}],"canonical_facts":{"dc:contributor.advisor":["Justin Vazquez-Poritz"],"dc:contributor.committeemember":["Andrea Ferroglia","Daniel Kabat","James Liu","Giovanni Ossola","Justin Vazquez-Poritz"],"dc:creator":["Zhang, Zhibai"],"dc:date.available":["2016-10-23T07:00:00Z"],"dc:description.abstract":["In this Ph.D. thesis we construct three classes of new solutions to supergravity theories in various dimensions and study their properties. The first class is reduction ansatz of 10D and 11D supergravity on Ricci-flat and noncompact manifolds. These reductions are from a scaling limit of the famous spherical reductions, and can be solely supported by warp factors. The second class contains a large number of String/M theory solutions that have Lifshitz or Schrodinger scaling symmetry, obtained from marginally deforming the geometry of internal dimensions of previous solutions. We propose that these new solutions are dual to marginal deformations of certain holographic non-relativistic field theories. The last class are singly spinning non-spherical black holes named black rings in 5D $U(1)^3$ supergravity with three dipole charges and three electric charges, which lie in the classification of 5D nonsupersymmetric black holes. We analyze their thermodynamic and global properties. As a byproduct, we embed the three dipole black ring into spacetime that contains background magnetic fields.
"],"dc:identifier":["https://academicworks.cuny.edu/gc_etds/1298"],"dc:subject":["Elementary Particles and Fields and String Theory","Gravity","Supergravity","Classical Solution","Black Hole","String Theory","AdS/CFT"],"dc:title":["New Classical Solutions in Supergravity"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Doctoral"],"thesis:degree_name":["Doctor of Philosophy"],"thesis:institution_name":["The Graduate School and University Center of The City University of New York"]},"updated_at":"2026-07-24T01:59:14Z"}